发明名称 |
AN IMPROVED HYBRID METHODOLOGY FOR PRODUCING COMPOSITE,MULTI-LAYERED AND GRADED COATINGS BY PLASMA SPRAYING UTITILIZING POWDER AND SOLUTION PRECURRSOR FEEDSTOCK |
摘要 |
A method of producing a composite plasma spray coating using simultaneous feeding of powder and solution precursor feedstock in a plasma spray gun is disclosed, comprising the steps of a) spraying a powder feedstock comprising micron sized particles into a plasma spray plume; and b) spraying a liquid feedstock comprising liquid precursor solution into the plasma spray plume, wherein the spraying of the powder feedstock and spraying of the liquid feedstock are independently controllable. The method allows control of coating composition and microstructure to deposit nanostructured and microstructured layers either sequentially to form layered coatings, or simultaneously to form either composite coatings or continuously gradient coatings to address diverse applications. Thermal barrier coatings produced using the new method have demonstrated twice the life compared to conventional air plasma sprayed coatings. |
申请公布号 |
ZA201202480(B) |
申请公布日期 |
2012.11.28 |
申请号 |
ZA20120002480 |
申请日期 |
2012.04.05 |
申请人 |
INTERNATIONAL ADVANCED RESEARCH CENTRE FOR POWER METALLURGY AND NEW MATERIALS (ARCI),DEPARTMENT OF SCIENCE AND TECHNOLOGY, GOVT.OF INDIA |
发明人 |
SIVAKUAMR GOVINDARAJAN;SHIRKANT VISHWANATH JOSHI |
分类号 |
C23C;B05D |
主分类号 |
C23C |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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