JP2006124794A - 錫又は錫合金めっき浴及びそれを用いためっき方法 - Google Patents
錫又は錫合金めっき浴及びそれを用いためっき方法 Download PDFInfo
- Publication number
- JP2006124794A JP2006124794A JP2004316311A JP2004316311A JP2006124794A JP 2006124794 A JP2006124794 A JP 2006124794A JP 2004316311 A JP2004316311 A JP 2004316311A JP 2004316311 A JP2004316311 A JP 2004316311A JP 2006124794 A JP2006124794 A JP 2006124794A
- Authority
- JP
- Japan
- Prior art keywords
- tin
- acid
- plating bath
- alloy plating
- tin 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.)
- Granted
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- 238000007747 plating Methods 0.000 title claims abstract description 81
- 229910001128 Sn alloy Inorganic materials 0.000 title claims abstract description 31
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims description 12
- -1 disulfide compound Chemical class 0.000 claims abstract description 21
- 239000002253 acid Substances 0.000 claims abstract description 15
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims abstract description 11
- 150000003839 salts Chemical class 0.000 claims abstract description 10
- KXDHJXZQYSOELW-UHFFFAOYSA-N Carbamic acid Chemical compound NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 claims abstract description 5
- 150000001735 carboxylic acids Chemical class 0.000 claims abstract description 5
- 150000001413 amino acids Chemical class 0.000 claims abstract description 4
- 150000002763 monocarboxylic acids Chemical class 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 239000000919 ceramic Substances 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 229910000859 α-Fe Inorganic materials 0.000 claims description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 5
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 5
- 229910052738 indium Inorganic materials 0.000 claims description 5
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 5
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- 239000011701 zinc Substances 0.000 claims description 5
- 229910052797 bismuth Inorganic materials 0.000 claims description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims description 4
- 239000011133 lead Substances 0.000 claims description 4
- 239000005355 lead glass Substances 0.000 claims description 4
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- 125000001183 hydrocarbyl group Chemical group 0.000 claims description 3
- 239000002736 nonionic surfactant Substances 0.000 claims description 3
- 239000003945 anionic surfactant Substances 0.000 claims 2
- 239000003093 cationic surfactant Substances 0.000 claims 2
- 239000004094 surface-active agent Substances 0.000 claims 2
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- 239000000126 substance Substances 0.000 claims 1
- 230000002776 aggregation Effects 0.000 abstract description 11
- 238000004220 aggregation Methods 0.000 abstract description 7
- 230000006866 deterioration Effects 0.000 abstract description 7
- 235000001014 amino acid Nutrition 0.000 abstract description 5
- 229910000679 solder Inorganic materials 0.000 abstract description 3
- 238000004070 electrodeposition Methods 0.000 abstract 1
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- 238000005476 soldering Methods 0.000 description 9
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
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- QUSNBJAOOMFDIB-UHFFFAOYSA-N Ethylamine Chemical compound CCN QUSNBJAOOMFDIB-UHFFFAOYSA-N 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 238000005054 agglomeration Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 4
- 238000009499 grossing Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- FAKFSJNVVCGEEI-UHFFFAOYSA-J tin(4+);disulfate Chemical compound [Sn+4].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O FAKFSJNVVCGEEI-UHFFFAOYSA-J 0.000 description 4
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 4
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- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 3
- WHUUTDBJXJRKMK-UHFFFAOYSA-N Glutamic acid Natural products OC(=O)C(N)CCC(O)=O WHUUTDBJXJRKMK-UHFFFAOYSA-N 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- WHUUTDBJXJRKMK-VKHMYHEASA-N L-glutamic acid Chemical compound OC(=O)[C@@H](N)CCC(O)=O WHUUTDBJXJRKMK-VKHMYHEASA-N 0.000 description 3
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 3
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 3
- 230000004075 alteration Effects 0.000 description 3
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 description 3
- 150000007942 carboxylates Chemical class 0.000 description 3
- 239000007795 chemical reaction product Substances 0.000 description 3
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- 239000004220 glutamic acid Substances 0.000 description 3
- 229910003002 lithium salt Inorganic materials 0.000 description 3
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- 239000001630 malic acid Substances 0.000 description 3
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- 239000011734 sodium Substances 0.000 description 3
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- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
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- 229940044652 phenolsulfonate Drugs 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 239000006187 pill Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- KCXFHTAICRTXLI-UHFFFAOYSA-N propane-1-sulfonic acid Chemical compound CCCS(O)(=O)=O KCXFHTAICRTXLI-UHFFFAOYSA-N 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- 229940048084 pyrophosphate Drugs 0.000 description 1
- 229940005657 pyrophosphoric acid Drugs 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 235000002639 sodium chloride Nutrition 0.000 description 1
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229940048086 sodium pyrophosphate Drugs 0.000 description 1
- IIACRCGMVDHOTQ-UHFFFAOYSA-M sulfamate Chemical compound NS([O-])(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-M 0.000 description 1
- 125000001174 sulfone group Chemical group 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 235000019818 tetrasodium diphosphate Nutrition 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 239000005028 tinplate Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 229910000406 trisodium phosphate Inorganic materials 0.000 description 1
- 235000019801 trisodium phosphate Nutrition 0.000 description 1
Landscapes
- Electroplating Methods And Accessories (AREA)
- Electroplating And Plating Baths Therefor (AREA)
Abstract
【解決手段】本発明は、下記一般式(I)で表されるジスルフィド化合物、及びカルボン酸又はその塩を含有する錫又は錫合金めっき浴であって、前記カルボン酸はモノカルボン酸、ジカルボン酸、ポリカルボン酸、オキシ又はケトカルボン酸、アミノ酸及びアミノカルボン酸からなる群より選ばれ、かつ、pHが2.0〜9.0である、前記錫又は錫合金めっき浴を提供する。
A-R1-S-S-R2-A (I)
(式中、R1及びR2はそれぞれ炭素数1〜20個の炭化水素残基を表し、それらは同一であっても又は異なっていてもよく、AはSO3Na、SO3H、OH、NH2又はNO2を表す。)
Description
A-R1-S-S-R2-A (I)
(式中、R1及びR2はそれぞれ炭素数1〜20個の炭化水素残基を表し、それらは同一であっても又は異なっていてもよく、AはSO3Na、SO3H、OH、NH2又はNO2を表す。)
また、本発明は、前記錫又は錫合金めっき浴を用いて被めっき物をめっきする錫又は錫合金めっき方法を提供する。
以下、本発明のめっき浴について詳しく説明する。
これにより、2個付きやダミー凝集等の問題で、はんだ付け性能を犠牲にしていた小型電子部品に対しても、総合性能の良いめっき皮膜が可能となり、製品の信頼性が更に向上する。
A-R1-S-S-R2-A (I)
(式中、R1及びR2はそれぞれ炭素数1〜20個の炭化水素残基を表し、それらは同一であっても又は異なっていてもよく、AはSO3Na、SO3H、OH、NH2又はNO2を表す。)
好ましくは、R1及びR2は炭素数1〜20個のアルキル基、フェニル基であり、それらは同一であっても又は異なっていてもよく、またAはスルホン基である。一般式(I)で表されるジスルフィド化合物の具体例としては、ビスソディウムスルホエチルジスルフィド、ビスソディウムスルホプロピルジスルフィド、ビスソディウムスルホペンチルジスルフィド、ビスソディウムスルホヘキシルジスルフィド、ビスソディウムスルホフェニルジスルフィド、ビススルホエチルジスルフィド、ビススルホプロピルジスルフィド、ビススルホペンチルジスルフィド、ビスアミノエチルジスルフィド、ビスアミノプロピルジスルフィド、ビスアミノブチルジスルフィド、ビスアミノペンチルジスルフィド、ビスヒドロキシエチルジスルフィド、ビスヒドロキシプロピルジスルフィド、ビスヒドロキシブチルジスルフィド、ビスヒドロキシペンチルジスルフィド、ビスニトロエチルジスルフィド、ビスニトロプロピルジスルフィド、ビスニトロブチルジスルフィド、ソディウムスルホエチルプロピルジスルフィド、スルホブチルプロピルジスルフィド等が挙げられる。好ましくは、ビスソディウムスルホプロピルジスルフィド、ビスソディウムスルホブチルジスルフィド、ビスアミノプロピルジスルフィド等が挙げられる。これらジスルフィド化合物は単独で使用してもよく、又は2種以上混合して使用してもよい。めっき浴における前記ジスルフィド化合物の濃度は、0.02〜10g/L、好ましくは0.2〜5g/Lである。
セラミックス、フェライト等の絶縁物質を複合化した小型チップ電子部品(1.0×0.5×0.5mm)や予めニッケルめっきを施した鉄製スチールボールダミー(0.3mmφ)を5w/v%脱脂−39(ディップソール(株)製)で脱脂し、水洗する。
表1に示すめっき液をアクリル製のめっき槽に入れ、小型水平バレルを使用し、陽極には白金板又は錫板、小型バレル槽内の陰極には、上記の品物を入れ接点を取り、表1のめっき浴組成及び、表2のめっき条件でめっきを行った。なお、めっき浴調製に使用した金属化合物は、硫酸錫及び硫酸錫と、亜鉛、銅、鉛、ビスマス、インジウムから成る群から選ばれた少なくとも一種の金属硫酸塩である。
得られためっきの膜厚と合金組成を測定した。めっき膜厚及び合金組成の測定は蛍光X線分析装置で行った。
更に、上記めっき部品の2個付き及びスチールボールダミーの凝集状態を目視観察、評価した。
次いで、得られためっきのはんだ付け性能を評価した。はんだ付け性能はメニスコグラフによる、ソルダペースト急加熱昇温法を用い、ぬれによる浮力がゼロとなる時間(ゼロクロスタイム)を測定した。また、はんだ付け性の経時変化を見るため、150℃−12時間の加速エージング処理を行い同時に評価した。はんだ付け性試験条件を表3に示す。
これらまとめた測定結果を表4に示す。
表5に示す組成のめっき液を使用し、実施例と同様のめっき条件(表2)でめっきを行った。これらまとめた測定結果を表6に示す。また、比較例1〜6に示す組成のめっき液で、通電条件を10A−120min−25℃に変更して、めっきを行った。これらまとめた測定結果を表7に示す。なお、めっき浴調製に使用した金属化合物は、硫酸錫及び硫酸錫と、亜鉛、銅、鉛、ビスマス、インジウムから成る群から選ばれた少なくとも一種の金属硫酸塩である。
Claims (7)
- 下記一般式(I)で表されるジスルフィド化合物、及びカルボン酸又はその塩を含有する錫又は錫合金めっき浴であって、前記カルボン酸はモノカルボン酸、ジカルボン酸、ポリカルボン酸、オキシ又はケトカルボン酸、アミノ酸及びアミノカルボン酸からなる群より選ばれ、かつ、pHが2〜9である、前記錫又は錫合金めっき浴。
A-R1-S-S-R2-A (I)
(式中、R1及びR2はそれぞれ炭素数1〜20個の炭化水素残基を表し、それらは同一であっても又は異なっていてもよく、AはSO3Na、SO3H、OH、NH2又はNO2を表す。) - 錫合金が、亜鉛、銅、鉛、ビスマス及びインジウムからなる群より選ばれる金属と錫との合金である、請求項1記載の錫又は錫合金めっき浴。
- さらに、ノニオン系界面活性剤、アニオン系界面活性剤、カチオン系界面活性剤及び両性界面活性剤からなる群より選ばれる界面活性剤を含有する請求項1又は2記載の錫及び錫合金めっき浴。
- 請求項1〜3のいずれか1項記載の錫又は錫合金めっき浴を用いて被めっき物をめっきする錫又は錫合金めっき方法。
- 錫又は錫合金めっきが、ノニオン界面活性剤、アニオン界面活性剤及びカチオン界面活性剤からなる群より選ばれる界面活性剤を含有する、請求項4記載の方法。
- 被めっき物が金属及び絶縁物質を含む、請求項4又は5記載の方法。
- 絶縁物質が、セラミックス、鉛ガラス、プラスチック及びフェライトからなる群から選ばれる、請求項4〜6のいずれか1項記載の方法。
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JPH0978285A (ja) * | 1995-09-07 | 1997-03-25 | Dipsol Chem Co Ltd | Sn−Bi系合金めっき浴 |
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