KR100721780B1 - 고강도 극미세/나노구조 알루미늄/질화알루미늄 또는알루미늄합금/질화알루미늄 복합재료의 제조 방법 - Google Patents
고강도 극미세/나노구조 알루미늄/질화알루미늄 또는알루미늄합금/질화알루미늄 복합재료의 제조 방법 Download PDFInfo
- Publication number
- KR100721780B1 KR100721780B1 KR1020050045516A KR20050045516A KR100721780B1 KR 100721780 B1 KR100721780 B1 KR 100721780B1 KR 1020050045516 A KR1020050045516 A KR 1020050045516A KR 20050045516 A KR20050045516 A KR 20050045516A KR 100721780 B1 KR100721780 B1 KR 100721780B1
- Authority
- KR
- South Korea
- Prior art keywords
- aluminum
- aluminum nitride
- powder
- alloying
- alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
- C22C32/0068—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only nitrides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
- B22F1/142—Thermal or thermo-mechanical treatment
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/10—Alloys containing non-metals
- C22C1/1084—Alloys containing non-metals by mechanical alloying (blending, milling)
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/20—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by extruding
- B22F2003/208—Warm or hot extruding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
Description
구분 | 실시예 1 | 실시예 2 | 실시예 3 | 비교예 1 |
항복강도(MPa at 25℃) | 957 | 390 | 440 | 300 |
항복강도(MPa at 200℃) | 328 | 241 | 225 |
Claims (6)
- 알루미늄 분말 또는 합금원소와의 혼합 분말을 질화 반응을 유도하기 위하여 질소를 함유한 암모니아 가스(NH3) 분위기에서 기계적 합금화 또는 기계적 밀링하여 질화알루미늄의 전구체를 제조한 후, 후속 열처리 공정을 거쳐 알루미늄과 질화알루미늄 혹은 알루미늄합금과 질화알루미늄 복합분말을 제조하고, 상기 복합분말을 열간 성형 공정을 통하여 복합재료를 제조하는 것을 특징으로 하는 고강도 극미세 나노구조 알루미늄과 질화알루미늄 또는 알루미늄합금과 질화알루미늄 복합재료의 제조 방법.
- 제 1 항에 있어서,상기 질화 반응을 유도하기 위하여 질소를 함유한 암모니아 가스(NH3) 분위기를 지속적으로 유지시킨 용기 내에서 상기 기계적 합금화 또는 기계적 밀링을 수행하는 것을 특징으로 하는 고강도 극미세 나노구조 알루미늄과 질화알루미늄 또는 알루미늄합금과 질화알루미늄 복합재료의 제조 방법.
- 제 1 항에 있어서,상기 후속 열처리는 질화알루미늄의 생성을 위하여 400℃ 이상으로부터 상기 복합분말의 용융온도 이하의 온도에서 0.1~48시간 열처리하는 것을 특징으로 하는 고강도 극미세 나노구조 알루미늄과 질화알루미늄 또는 알루미늄합금과 질화알루미늄 복합재료의 제조 방법.
- 제 1 항 또는 제 2 항에 있어서,상기 열간 성형 공정에서 상기 후속 열처리는 고온 탈가스 공정인 것을 특징으로 하는 고강도 극미세 나노구조 알루미늄과 질화알루미늄 또는 알루미늄합금과 질화알루미늄 복합재료의 제조 방법.
- 제 1 항에 있어서, 상기 기계적 합금화 또는 기계적 밀링 공정에 의하여, 알루미늄 혹은 알루미늄합금 기지의 결정립 크기와 질화알루미늄 강화상의 크기가 10㎛ 이하의 극미세 나노구조를 가지는 것을 특징으로 고강도 극미세 나노구조 알루미늄과 질화알루미늄 또는 알루미늄합금과 질화알루미늄 복합재료의 제조 방법.
- 제 1 항에 있어서, 알루미늄 기지에 고용강화 원소인 Mg, Ag, Mn 중 하나 이상의 원소를 무게비 0.1% ~ 고용한도 이하로 첨가하거나, 석출강화 원소인 Cu, Zn, Si, Ti, Fe, Li, Sn, Cr, Zr 중 하나 이상의 원소를 고용한도 이상으로 첨가하거나, 희토류 원소인 Y, Ce, La, Sc, Sm, Nd, Gd, Pr 중 하나 이상의 원소 또는 미시메탈(misch metal)을 무게비로 0.1%~10.0%를 첨가하거나, W, Mo, Co의 합금원소 또는 Al2O3, SiC, Si3N4 등의 세라믹 입자를 무게비 0.1% ~ 50%를 첨가하는 것을 특징으로 하는 고강도 극미세 나노구조 알루미늄과 질화알루미늄 또는 알루미늄합금과 질화알루미늄 복합재료의 제조 방법.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020050045516A KR100721780B1 (ko) | 2005-05-30 | 2005-05-30 | 고강도 극미세/나노구조 알루미늄/질화알루미늄 또는알루미늄합금/질화알루미늄 복합재료의 제조 방법 |
JP2008514552A JP4989636B2 (ja) | 2005-05-30 | 2006-05-30 | 高強度極微細ナノ構造のアルミニウム及び窒化アルミニウム又はアルミニウム合金及び窒化アルミニウム複合材料の製造方法 |
PCT/KR2006/002093 WO2006129965A1 (en) | 2005-05-30 | 2006-05-30 | Method for manufacturing high strength ultra-fine/nano-structured al /aln or al alloy/aln composite materials |
US11/916,239 US20090193935A1 (en) | 2005-05-30 | 2006-05-30 | Method for Manufacturing High Strength Ultra-Fine/Nano-Structured Al/Aln or Al Alloy/Aln Composite Materials |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020050045516A KR100721780B1 (ko) | 2005-05-30 | 2005-05-30 | 고강도 극미세/나노구조 알루미늄/질화알루미늄 또는알루미늄합금/질화알루미늄 복합재료의 제조 방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20060123880A KR20060123880A (ko) | 2006-12-05 |
KR100721780B1 true KR100721780B1 (ko) | 2007-05-25 |
Family
ID=37481848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020050045516A Expired - Fee Related KR100721780B1 (ko) | 2005-05-30 | 2005-05-30 | 고강도 극미세/나노구조 알루미늄/질화알루미늄 또는알루미늄합금/질화알루미늄 복합재료의 제조 방법 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20090193935A1 (ko) |
JP (1) | JP4989636B2 (ko) |
KR (1) | KR100721780B1 (ko) |
WO (1) | WO2006129965A1 (ko) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4740002B2 (ja) * | 2006-03-20 | 2011-08-03 | 日本碍子株式会社 | 窒化アルミニウム焼結体、半導体製造装置用部材、及び窒化アルミニウム焼結体の製造方法 |
CN100450971C (zh) * | 2007-02-12 | 2009-01-14 | 河北理工大学 | 一种Al-AlN-ZrO2陶瓷材料的制备方法 |
KR101489571B1 (ko) * | 2013-02-26 | 2015-02-03 | 전북대학교산학협력단 | 기체-고체 반응을 이용한 금속질화물 복합분말 제조방법 및 이에 의하여 제조된 금속질화물 복합분말 |
KR20160023003A (ko) * | 2014-08-20 | 2016-03-03 | 현대모비스 주식회사 | 알루미늄 합금의 제조 방법 |
KR101749066B1 (ko) * | 2014-12-15 | 2017-06-20 | 이건배 | 신개념을 이용한 알루미늄 기지 복합재료의 제조방법 및 이에 의하여 제조된 알루미늄 기지 복합재료 |
CN104532033B (zh) * | 2014-12-24 | 2016-08-24 | 南昌大学 | 一种纳米氧化铝增强铝基复合材料半固态浆料的制备方法 |
CN104532032B (zh) * | 2014-12-24 | 2016-11-02 | 南昌大学 | 一种基于复合振动技术制备纳米氧化铝增强铝基复合材料半固态浆料的方法 |
EP3181711B1 (de) * | 2015-12-14 | 2020-02-26 | Apworks GmbH | Scandiumhaltige aluminiumlegierung für pulvermetallurgische technologien |
CN105772709A (zh) * | 2016-03-11 | 2016-07-20 | 九江学院 | 一种水热法制备包裹型Al2O3/Al复合粉体的方法 |
CN107716917B (zh) * | 2017-09-20 | 2019-07-23 | 西安理工大学 | 一种气相碳化法原位反应制备w/wc复合粉末的方法 |
CN108455996B (zh) * | 2018-01-04 | 2021-06-01 | 梅文婕 | 一种纳米铝陶瓷的制备方法 |
CN108342606B (zh) * | 2018-01-19 | 2020-01-24 | 江苏大学 | 一种混合稀土改善原位铝基复合材料组织和性能的方法 |
CN111922349B (zh) * | 2020-09-21 | 2021-01-05 | 西安斯瑞先进铜合金科技有限公司 | 一种CuCr合金电工触头专用金属铬粉的制备方法 |
CN112359240B (zh) * | 2020-10-23 | 2022-02-22 | 黑龙江科技大学 | 一种定向阵列的陶瓷相增强高熵合金的制备方法 |
CN112143943B (zh) * | 2020-10-29 | 2022-03-08 | 昆明理工大学 | 一种耐热铝合金导线的制备方法 |
CN113005317A (zh) * | 2021-02-24 | 2021-06-22 | 山东省科学院新材料研究所 | 一种高热稳定性混晶结构镁合金及可控性制备方法与应用 |
CN113652630B (zh) * | 2021-08-18 | 2022-10-28 | 合肥工业大学 | 一种室温下在镁锂合金表面制备含氮改性层的方法 |
CN114561562B (zh) * | 2022-03-23 | 2023-07-21 | 兰州理工大学 | 一种Al-Ti-La中间合金及其细化变质处理Al-7Si合金的方法 |
CN115029590B (zh) * | 2022-07-07 | 2023-06-09 | 南京理工大学 | 一种高刚度高强度耐高温铝基复合材料及制备方法 |
CN115261660B (zh) * | 2022-09-30 | 2022-12-20 | 昆明理工大学 | 一种高强高导热铝合金材料的制备方法 |
CN115725881B (zh) * | 2022-12-06 | 2023-11-24 | 山东创新金属科技有限公司 | 一种耐高温的铝合金材料及其制备方法 |
CN116623061A (zh) * | 2023-07-25 | 2023-08-22 | 杭州圣钘能源有限公司 | 一种复合相变储热材料及储热装置 |
CN119800174A (zh) * | 2025-03-13 | 2025-04-11 | 安徽安簧机械股份有限公司 | 一种高比强陶铝合金及其制备方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0285301A (ja) * | 1988-09-06 | 1990-03-26 | Exxon Res & Eng Co | アルミニウム基酸化物分散強化粉末及びそのテクスチャーのない押出し製品 |
JPH04128336A (ja) * | 1990-09-18 | 1992-04-28 | Kobe Steel Ltd | 高強度高導電性アルミニウム合金およびその製造方法 |
JPH0617179A (ja) * | 1992-07-02 | 1994-01-25 | Kobe Steel Ltd | 鑞付け用高強度高導電性アルミニウム合金およびその 製造方法 |
US20040177723A1 (en) | 2003-03-12 | 2004-09-16 | The Boeing Company | Method for preparing nanostructured metal alloys having increased nitride content |
US6902699B2 (en) | 2002-10-02 | 2005-06-07 | The Boeing Company | Method for preparing cryomilled aluminum alloys and components extruded and forged therefrom |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4818481A (en) * | 1987-03-09 | 1989-04-04 | Exxon Research And Engineering Company | Method of extruding aluminum-base oxide dispersion strengthened |
JP2868889B2 (ja) * | 1990-11-20 | 1999-03-10 | 大同ほくさん株式会社 | アルミニウム粉末加圧成形品の製法 |
JPH04371505A (ja) * | 1991-06-17 | 1992-12-24 | Mitsubishi Materials Corp | 高い飽和磁束密度を有する軟磁性粉末の製造法 |
JP3419582B2 (ja) * | 1995-03-22 | 2003-06-23 | ワイケイケイ株式会社 | 高強度アルミニウム基複合材料の製造方法 |
-
2005
- 2005-05-30 KR KR1020050045516A patent/KR100721780B1/ko not_active Expired - Fee Related
-
2006
- 2006-05-30 US US11/916,239 patent/US20090193935A1/en not_active Abandoned
- 2006-05-30 JP JP2008514552A patent/JP4989636B2/ja active Active
- 2006-05-30 WO PCT/KR2006/002093 patent/WO2006129965A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0285301A (ja) * | 1988-09-06 | 1990-03-26 | Exxon Res & Eng Co | アルミニウム基酸化物分散強化粉末及びそのテクスチャーのない押出し製品 |
JPH04128336A (ja) * | 1990-09-18 | 1992-04-28 | Kobe Steel Ltd | 高強度高導電性アルミニウム合金およびその製造方法 |
JPH0617179A (ja) * | 1992-07-02 | 1994-01-25 | Kobe Steel Ltd | 鑞付け用高強度高導電性アルミニウム合金およびその 製造方法 |
US6902699B2 (en) | 2002-10-02 | 2005-06-07 | The Boeing Company | Method for preparing cryomilled aluminum alloys and components extruded and forged therefrom |
US20040177723A1 (en) | 2003-03-12 | 2004-09-16 | The Boeing Company | Method for preparing nanostructured metal alloys having increased nitride content |
Also Published As
Publication number | Publication date |
---|---|
JP4989636B2 (ja) | 2012-08-01 |
JP2008542541A (ja) | 2008-11-27 |
WO2006129965A1 (en) | 2006-12-07 |
KR20060123880A (ko) | 2006-12-05 |
US20090193935A1 (en) | 2009-08-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR100721780B1 (ko) | 고강도 극미세/나노구조 알루미늄/질화알루미늄 또는알루미늄합금/질화알루미늄 복합재료의 제조 방법 | |
CN1325209C (zh) | Mo-Cu复合粉末 | |
US5882561A (en) | Process for making a dense ceramic workpiece | |
US5561829A (en) | Method of producing structural metal matrix composite products from a blend of powders | |
US5723799A (en) | Method for production of metal-based composites with oxide particle dispersion | |
He et al. | Processing and microhardness of bulk Cu-Fe nanocomposites | |
Zhou et al. | Microstructure and properties of fine grained W–15 wt.% Cu composite sintered by microwave from the sol–gel prepared powders | |
Dong et al. | Comparative study on the densification process of different titanium powders | |
US5632827A (en) | Aluminum alloy and process for producing the same | |
US5454999A (en) | Composite silicide/silicon carbide mechanical alloy | |
US5000910A (en) | Method of manufacturing intermetallic compound | |
JP2003535969A (ja) | 金属間アルミニド及びシリサイドスパッタリングターゲット、及びその製造方法 | |
Leszczyńska-Madej et al. | Microstructure characterization of SiC reinforced aluminium and Al4Cu alloy matrix composites | |
JP3793813B2 (ja) | 高強度チタン合金及びその製造方法 | |
US11085109B2 (en) | Method of manufacturing a crystalline aluminum-iron-silicon alloy | |
KR101410490B1 (ko) | 분말사출 성형체 제조방법 | |
Lee et al. | Fabrication of Mg2Si thermoelectric materials by mechanical alloying and spark-plasma sintering process | |
JP3704556B2 (ja) | 亜鉛アンチモン化合物の製造法 | |
KR100722530B1 (ko) | 기계적 밀링/합금화에 의한 고강도 준결정상 강화극미세/나노구조 알루미늄 복합재료의 제조방법 | |
JP4123388B2 (ja) | 亜鉛アンチモン化合物焼結体 | |
KR20140061014A (ko) | 액상 반응소결 공법을 이용하여 카바이드 입자를 균일 분산시킨 금속기지 복합체 및 그 제조 방법 | |
JPH0688153A (ja) | 焼結チタン合金の製造方法 | |
CN100431744C (zh) | Mo-Cu复合粉末的制备方法 | |
Paramore et al. | Powder casting: producing bulk metal components from powder without compaction | |
JP2000160267A (ja) | 炭化珪素系複合材料およびその製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
PA0109 | Patent application |
Patent event code: PA01091R01D Comment text: Patent Application Patent event date: 20050530 |
|
PA0201 | Request for examination | ||
N231 | Notification of change of applicant | ||
PN2301 | Change of applicant |
Patent event date: 20051014 Comment text: Notification of Change of Applicant Patent event code: PN23011R01D |
|
E902 | Notification of reason for refusal | ||
PE0902 | Notice of grounds for rejection |
Comment text: Notification of reason for refusal Patent event date: 20060626 Patent event code: PE09021S01D |
|
PG1501 | Laying open of application | ||
E701 | Decision to grant or registration of patent right | ||
PE0701 | Decision of registration |
Patent event code: PE07011S01D Comment text: Decision to Grant Registration Patent event date: 20070220 |
|
GRNT | Written decision to grant | ||
PR0701 | Registration of establishment |
Comment text: Registration of Establishment Patent event date: 20070518 Patent event code: PR07011E01D |
|
PR1002 | Payment of registration fee |
Payment date: 20070521 End annual number: 3 Start annual number: 1 |
|
PG1601 | Publication of registration | ||
G170 | Re-publication after modification of scope of protection [patent] | ||
PG1701 | Publication of correction | ||
PR1001 | Payment of annual fee |
Payment date: 20100513 Start annual number: 4 End annual number: 4 |
|
PR1001 | Payment of annual fee |
Payment date: 20110429 Start annual number: 5 End annual number: 5 |
|
PR1001 | Payment of annual fee |
Payment date: 20120419 Start annual number: 6 End annual number: 6 |
|
FPAY | Annual fee payment |
Payment date: 20130422 Year of fee payment: 7 |
|
PR1001 | Payment of annual fee |
Payment date: 20130422 Start annual number: 7 End annual number: 7 |
|
FPAY | Annual fee payment |
Payment date: 20140513 Year of fee payment: 8 |
|
PR1001 | Payment of annual fee |
Payment date: 20140513 Start annual number: 8 End annual number: 8 |
|
FPAY | Annual fee payment |
Payment date: 20150508 Year of fee payment: 9 |
|
PR1001 | Payment of annual fee |
Payment date: 20150508 Start annual number: 9 End annual number: 9 |
|
FPAY | Annual fee payment |
Payment date: 20160926 Year of fee payment: 10 |
|
PR1001 | Payment of annual fee |
Payment date: 20160926 Start annual number: 10 End annual number: 10 |
|
LAPS | Lapse due to unpaid annual fee | ||
PC1903 | Unpaid annual fee |
Termination category: Default of registration fee Termination date: 20180227 |