SU168578A1 - METHOD OF COVERING CARBIDE BORON - Google Patents
METHOD OF COVERING CARBIDE BORONInfo
- Publication number
- SU168578A1 SU168578A1 SU789736A SU789736A SU168578A1 SU 168578 A1 SU168578 A1 SU 168578A1 SU 789736 A SU789736 A SU 789736A SU 789736 A SU789736 A SU 789736A SU 168578 A1 SU168578 A1 SU 168578A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- boron carbide
- covering
- carbide boron
- coating
- boron
- Prior art date
Links
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 title 1
- 229910052796 boron Inorganic materials 0.000 title 1
- 229910052580 B4C Inorganic materials 0.000 description 9
- INAHAJYZKVIDIZ-UHFFFAOYSA-N Boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 description 9
- 238000000576 coating method Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- LTPBRCUWZOMYOC-UHFFFAOYSA-N BeO Chemical compound O=[Be] LTPBRCUWZOMYOC-UHFFFAOYSA-N 0.000 description 2
- NUEWEVRJMWXXFB-UHFFFAOYSA-N Chromium(III) boride Chemical compound [Cr]=[B] NUEWEVRJMWXXFB-UHFFFAOYSA-N 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 229910021343 molybdenum disilicide Inorganic materials 0.000 description 2
- 230000001590 oxidative Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- HWKQNAWCHQMZHK-UHFFFAOYSA-N Trolnitrate Chemical compound [O-][N+](=O)OCCN(CCO[N+]([O-])=O)CCO[N+]([O-])=O HWKQNAWCHQMZHK-UHFFFAOYSA-N 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 229910052904 quartz Inorganic materials 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
Как известно, карбид бора интенсивно окисл етс при температуре свыше 900°С. Карбид бора реагирует с Металлами и неустойчив в контакте с различными огнеупорными материалами: в местах соприкосновени его с окисью берилли , корундом, кварцем, при 1200°С наблюдаетс химическое взаимодействие с образованием стекла. Особенно энергично он реагирует со стал ми. Уже при температуре 1000-1200°С карбид бора превращаетс в бесформенную массу.As is known, boron carbide is intensively oxidized at temperatures above 900 ° C. Boron carbide reacts with Metals and is unstable in contact with various refractory materials: at contact points with beryllium oxide, corundum, quartz, at 1200 ° C chemical interaction is observed with the formation of glass. Especially vigorously he reacts with became m. Already at a temperature of 1000-1200 ° C, boron carbide turns into a shapeless mass.
Дл повышени жаростойкости карбида бора и устойчивости его в контакте с различными материалами предложен способ покрыти карбида бора следуюш,им составом (в вес. ч.):In order to increase the heat resistance of boron carbide and its stability in contact with various materials, a method of boron carbide coating has been proposed, with the following composition (in weight parts):
дисилицид молибдена .... 70-80molybdenum disilicide .... 70-80
борид хрома5-15chromium boride 5-15
кремний5-15silicon 5-15
св зка 23810Link 23810
бентонит 2bentonite 2
(размеры частиц всех компонентов в пределах мк). Покрытие наноситс из водноспиртовой эмульсии состава (в %):(particle size of all components in the range of microns). The coating is applied from a water-alcohol emulsion composition (in%):
шихта55charge55
вода30water30
этиловый спирт15ethyl alcohol15
Затем карбид бора высушиваетс и обжигаетс в окислительной атмосфере: первый слой при 1350°С в течение 1-2 мин; второй и третий слои при 1350-1430°С.Then the boron carbide is dried and burned in an oxidizing atmosphere: the first layer at 1350 ° C for 1-2 minutes; the second and third layers at 1350-1430 ° C.
Оптимальна толщина покрыти 0,4- 0,6 мм.The optimum coating thickness is 0.4-0.6 mm.
Защищенный таким образом карбид бора устойчив против атмосферной коррозии при 1200-1400°С.The boron carbide thus protected is resistant to atmospheric corrosion at 1200-1400 ° C.
Предмет изобретени Subject invention
Способ покрыти карбида бора, отличающийс тем, что, с целью предотвращени окислени карбида бора при 1200-1400°С, его подвергают трехкратному покрытию водноспиртовой эмульсией, включающей 30% воды , 15% этилового спирта и 55о/о шихты, содержащей (в вес. ч.):The boron carbide coating method, characterized in that, in order to prevent boron carbide oxidation at 1200-1400 ° C, it is subjected to a three-fold coating with a water-alcohol emulsion comprising 30% water, 15% ethanol and 55 ° / oh mixture containing (by weight. h):
дисилицид молибдена .... 70-80molybdenum disilicide .... 70-80
борид хрома5-15chromium boride 5-15
кремний5-15silicon 5-15
св зка 23810Link 23810
бентонит2,bentonite2,
после чего подвергают сушке и обжигу в окислительных услови х первого сло при 1350°С в течение 1-2 мин; второго и третьего-при 1350-1430°С.then dried and fired under oxidizing conditions of the first layer at 1350 ° C for 1-2 minutes; second and third when 1350-1430 ° C.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU168578A1 true SU168578A1 (en) |
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