(廣東工業(yè)大學(xué) 材料與能源學(xué)院， 廣州 510090)
摘 要: 用電刷鍍方式制備了Ni-W（D）合金鍍層， 測(cè)試了鍍層在不同溫度下的氧化與滑動(dòng)磨損速率， 用掃描電鏡觀察了試樣磨損表面的形貌。 結(jié)果表明： Ni-W（D）合金刷鍍層在600℃以下具有較高的抗氧化能力， 超過700℃時(shí)由于氧化膜中WO3的增加， 鍍層抗氧化能力下降； 500℃以下時(shí)， 由于鍍層氧化膜的減摩作用， Ni-W（D）合金刷鍍層的磨損機(jī)理主要是輕微磨粒磨損； 600℃以上時(shí)， 鍍層的磨損機(jī)理主要為鍍層剝落和粘著磨損， 磨損速率較大。
關(guān)鍵字: Ni-W（D）合金; 電刷鍍; 高溫氧化; 高溫磨損
HU She-jun, LU Guo-hui
（Faculty of Material and Energy, Guangdong University of Technology,
Guangzhou 510090, China）
Abstract:The Ni-W alloy coating layer was prepared by brush plating. The oxidation and wear rate of the coating at elevated temperature were determined, the phases presence of the coating layer were examined by the X-ray diffraction, and the worn surfaces were observed with a scanning electron microscope in order to analyze the coating wear mechanism. The results show that, the brush plated layer is characterized by slight oxidation below 600℃; above 700℃ the oxidation resistance decreases evidently due to the WO3 formed in the oxidation film; a relatively low wear rate is observed below 500℃ and the wear mechanism is scratching abrasion; while test temperature is above 600℃, the wear rate increases obviously, the main wear mechanisms are adhesive wear and spalling of the coating layer.
Key words: Ni-W alloy; brush plating; oxidation; high temperature wear behavior
