Preparation of iron base amorphous and nanocrystalline alloy coatings by plasma spraying
-
摘要: 以一種多元素鐵基非晶合金粉末(含C,Si,B,Cr,W,Mo,Ni,Fe等)作為噴涂材料,用大氣等離子噴涂在316L不銹鋼基體上制備涂層.用X射線衍射儀檢測涂層的晶型結構,掃描電鏡觀察涂層的形貌,透射電鏡觀察涂層的微觀組織結構,顯微硬度儀測量涂層的顯微硬度,納米壓痕儀測量涂層的硬度及彈性模量,并用謝樂公式計算了晶粒尺寸.結果表明:所制備的涂層均勻致密,與基體結合良好;涂層含有非晶和納米顆粒;這種非晶-納米復合涂層具有很高的硬度和彈性模量.Abstract: The coating was prepared on 316L stainless steel by air plasma spraying with a kind of iron base amorphous alloy powder which contains C, Si, B, Cr, W, Mo, Ni, Fe etc. as the plasma spraying powder. The crystal configuration of the coating was inspected with an X-ray diffractometer, the microstructure observed by SEM and TEM, the hardness and elastic modulus measured with a micro-sclerometer and a triboindenter; and the size ofcry- stallites in the coating calculated by Scherrer's equation. It is proved that the Fe-base alloy coating fabricated by air plasma spraying has homogenous microstructure and contains metal glass and nanocrystal at the same time. The experimental results show that the coating is uniform, dense and well combined with 316L stainless steel, with high hardness and elastic modulus.
-
Key words:
- iron base amorphous alloy /
- nanocrystal /
- plasma spraying /
- coating
-
點擊查看大圖
計量
- 文章訪問數: 146
- HTML全文瀏覽量: 32
- PDF下載量: 5
- 被引次數: 0
下載:
