摘要
目的 旨在建立溶胶-凝胶沉积金属钛的方法,在烤瓷用镍铬合金表面沉积一薄层钛,利用钛优秀的耐蚀性,增强镍铬合金的耐蚀性能。方法 溶胶-凝胶法的步骤:①镍铬合金表面预处理;②溶胶制备;③涂层;④热处理。运用X射线光电子(XPS)能谱分析涂层后的镍铬合金表面元素成分的变化。结果 镍铬合金经涂钛后,表面无起皮、鼓泡、剥落现象。XPS能谱分析峰高图表明,涂层后镍铬合金表面除镍、铬等元素外,增加了钛元素。据每分钟氩离子刻蚀103μm计算,涂钛层厚度约为20-80μm。结论 溶胶-凝胶法能够在镍铬合金表面沉积一薄层金属钛。
Objective The aim of this study was to establish sol-gel technique of coating titanium on the surface of Ni-Cr alloy ( PFM ) in order to enhance corrosion resistance and reduce corrosive rate in oral cavity. Methods The sol-gel technique included four steps: (Ⅰ) pre-treatment; (2) preparation of sol; (3) coating; (4) heat treatment. Elements on the surface of Ni-Cr alloy were analyzed with X-ray photoelectron spectroscopy. Results After coating Ti, the surface of Ni-Cr alloy looked light golden without particles, blisters and fragments. Besides Ni and Cr, titanium was found on surface of Ni-Cr alloy after coating. With Ar+ ion carving-corrosion figure, the thickness of titanium was about 20-80μm. Conclusion With sol-gel technique, titanium could be coated on the surface of Ni-Cr alloy.
出处
《中华口腔医学杂志》
CAS
CSCD
北大核心
2004年第4期306-308,共3页
Chinese Journal of Stomatology
