Surface Modification of AL9 Alloy by Electric-Spark Alloying with Materials of the AlN – Ti(Zr)Bub>2 ub> – Ti(Zr)Siub>2 ub> System
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- 作者：Podchernyaeva ; Irina A. ; Panasyuk ; Alla D. ; Yurechko ; Dmitrii V.
- 关键词：electric ; spark alloying ; aluminum alloy ; composite ceramics ; wear resistance
- 刊名：Powder Metallurgy and Metal Ceramics
- 出版年：2004
- 出版时间：2004
- 年：2004
- 卷：43
- 期：3/4
- 页码：156-162
- 全文大小：301 KB
文摘
Using x-ray phase, electron-probe microanalysis, and scanning electron microscopy, we have established that heterophase coatings based on an aluminum matrix with a quasi-layered finely dispersed structure reinforced with titanium (zirconium) diboride and borosilicide, and aluminum nitride (alloyed with oxygen) are formed by electric-spark alloying of AL9 alloy with A1N – Ti(Zr)Bub>2 ub> – Ti(Zr)Siub>2 ub> composite ceramics. The wear resistance of the A1N – ZrB2-based coating approached that of the ceramic itself with the sliding speed increased to V ≥ l m/sec. The formation of secondary structures of oxide solid solutions on the coating surface during tribooxidation was investigated.