SU357598A1 - ELECTRICAL INSULATING MATERIAL - Google Patents
ELECTRICAL INSULATING MATERIALInfo
- Publication number
- SU357598A1 SU357598A1 SU1499663A SU1499663A SU357598A1 SU 357598 A1 SU357598 A1 SU 357598A1 SU 1499663 A SU1499663 A SU 1499663A SU 1499663 A SU1499663 A SU 1499663A SU 357598 A1 SU357598 A1 SU 357598A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- insulating material
- aluminum nitride
- electrical insulating
- mullite
- glass fibers
- Prior art date
Links
- 239000011810 insulating material Substances 0.000 title description 3
- PIGFYZPCRLYGLF-UHFFFAOYSA-N aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 7
- 239000003365 glass fiber Substances 0.000 description 5
- 229910052863 mullite Inorganic materials 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 210000003135 Vibrissae Anatomy 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N N#B Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 229910020169 SiOa Inorganic materials 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Description
Известен высокотемпературный неметаллический материал - нитрид алюмини , обладающий высокой химической стойкостью, электроизол ционными свойствами и диссоциирующий при температуре выще 2200°С. Основными недостатками нитрида алюмини вл ютс резкое уменьшение электросопротивлени при нагреве до 1200°С и недостаточно высока термическа стойкость.A high-temperature non-metallic material is known - aluminum nitride, which has high chemical resistance, electrical insulation properties and dissociates at a temperature higher than 2200 ° C. The main disadvantages of aluminum nitride are the sharp decrease in electrical resistivity when heated to 1200 ° C and the thermal resistance is not high enough.
Цель изобретени - создание электроизол ционного материала на основе нитрида алюмини , обладающего более высоким электросопротивлением , высокой стойкостью к тепловым ударам при нагреве до 1200°С.The purpose of the invention is to create an electrically insulating material based on aluminum nitride, which has a higher electrical resistance, high resistance to thermal shocks when heated to 1200 ° C.
Это достигаетс тем, что в матрицу из нитрида алюмини введен наполнитель в виде нитевидных кристаллов муллита диаметром 1-3 мк и длиной 150-600 мк и стекл нных волокон диаметром 10-30 мк и длиной 1- 3 мм. Новый материал состоит из 55-94% нитрида алюмини , 1-15% нитевидных кристаллов муллита (3 АЬОз 2 SiOa) и 15-30% стекл нного волокна.This is achieved by introducing a filler in the form of whisker crystals of mullite with a diameter of 1-3 microns and a length of 150-600 microns and glass fibers with a diameter of 10-30 microns and a length of 1-3 mm in the matrix of aluminum nitride. The new material consists of 55-94% aluminum nitride, 1-15% whisker-like mullite crystals (3 ABOZ 2 SiOa) and 15-30% glass fiber.
Технологи изготовлени материала с нитевидными кристаллами муллита и стекл нными волокнами на основе нитрида алюмини заключаетс в прессовании заготовок из смеси 55-94% порошка нитрида алюмини , 1 - 15% нитевидных кристаллов муллита и 15- 30% стекл нных волокон и их последующем спекании при 1550°С в азоте в засыпке из нитрида бора.The technology of making material with whisker crystals of mullite and glass fibers based on aluminum nitride consists in pressing blanks from a mixture of 55-94% aluminum nitride powder, 1 to 15% of whiskers of mullite and 15-30% of glass fibers and their subsequent sintering at 1550 ° C in nitrogen in the boron nitride charge.
Полученный материал можно использовать в качестве огнеупорного и электроизол ционного высокотемпературного материала, способного выдерживать без разрущени резкие теплосмены.The resulting material can be used as a refractory and electrically insulating high-temperature material capable of withstanding abrupt heat shifts without destruction.
1515
Предмет изобретени Subject invention
Электроизол ционный материал на основе нитрида алюмини , отличающийс тем, что, с целью повышени его удельного сопротивлени при высоких температурах, в его состав введены нитевидные монокристаллы муллита и волокна стекла.An electrically insulating material based on aluminum nitride, characterized in that, in order to increase its resistivity at high temperatures, filamentary monocrystals of mullite and glass fibers are introduced into its composition.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU357598A1 true SU357598A1 (en) |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4921222A (en) * | 1988-04-05 | 1990-05-01 | Advanced Metals Technology Corp. | Fiber composite article and method of manufacture |
| US5880404A (en) * | 1996-06-28 | 1999-03-09 | Advanced Metals Technology Corporation | Power transmission support structures |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4921222A (en) * | 1988-04-05 | 1990-05-01 | Advanced Metals Technology Corp. | Fiber composite article and method of manufacture |
| US5880404A (en) * | 1996-06-28 | 1999-03-09 | Advanced Metals Technology Corporation | Power transmission support structures |
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