Effect of surface mechanical attrition treatment of titanium using alumina balls: surface roughness, contact angle and apatite forming ability
Effect of surface mechanical attrition treatment of titanium using alumina balls: surface roughness, contact angle and apatite forming ability
复制标题
使用氧化铝球对钛进行表面机械研磨处理的效果：表面粗糙度、接触角和磷灰石形成能力
DOI：
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发表时间：
2013
影响因子：
2.7
通讯作者：
Min Ho Lee
中科院分区：
文献类型：
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作者：
Jamesh MOHAMMED IBRAHIM;T. S. Sankara Narayanan;P. Chu;I. Park;Min Ho Lee
研究了8mm Ø氧化铝球对商品纯钛（CP-Ti）进行表面机械摩擦处理（SMAT）的效果。SMAT诱导了塑性变形，增加了表面粗糙度，减小了晶粒尺寸，减小了接触角（从64°到43°），表面能相应增加（从32到53 mJ/m2）。未处理的CP-Ti和使用氧化铝球处理900 s的CP-Ti在浸泡28 d之前没有磷灰石生长，而处理1800和2700 s的CP-Ti在选择性区域有磷灰石生长，并且随着浸泡时间的增加，生长程度增加。研究表明，使用氧化铝球的SMAT有利于赋予所需的表面特性，前提是表面污染有限，否则会降低磷灰石形成能力。
The effect of surface mechanical attrition treatment (SMAT) of commercially pure titanium (CP-Ti) using 8mm Ø alumina balls was studied. SMAT induced plastic deformation, increased the surface roughness, reduced the grain size and decreased the contact angle (from 64° to 43°) with a corresponding increase in surface energy (from 32 to 53 mJ/m2). Untreated CP-Ti and those treated using alumina balls for 900 s reveals no apatite growth until the 28th day of immersion whereas those treated for 1800 and 2700 s exhibit apatite growth in selective areas and the extent of growth is increased with increase in immersion time in SBF. The study reveals that SMAT using alumina balls is beneficial in imparting the desired surface characteristics, provided the surface contamination is limited, which would otherwise decrease the apatite forming ability.