口腔生物医学
口腔生物醫學
구강생물의학
ORAL BIOMEDICINE
2013年
3期
134-137
,共4页
聂鹤鹏%王国平%王培志%邱憬
聶鶴鵬%王國平%王培誌%邱憬
섭학붕%왕국평%왕배지%구경
纯钛%表面处理%腐蚀
純鈦%錶麵處理%腐蝕
순태%표면처리%부식
Titanium%Surface Modification%Corrosion
目的：评价不同方法表面处理后纯钛表面粗糙程度对其耐腐蚀性能的影响。方法：制备33个纯钛试件并随机分为3组，分别进行喷砂、阳极氧化和机械抛光处理，应用扫描电镜观察不同处理后钛件表面微形貌，在酸性含氟人工唾液中测试开路电位和阳极极化曲线。结果：扫描电镜结果显示喷砂后钛表面有大量的弹坑和划痕，深度较深，且形状不规则，大小不一，边缘锐利，为微米级粗糙表面形态；而阳极氧化表面为大小均一的直径80 nm的纳米管状结构，为纳米级粗糙表面形态；机械抛光表面划痕明显，深度较浅，为微米级粗糙表面形态。在酸性含氟人工唾液中，3组之间自腐蚀电位值的比较为：阳极氧化组＞机械抛光组＞喷砂组；腐蚀电流密度值的比较为：喷砂组＞机械抛光组＞阳极氧化组，具有显著性差异（P＜0.05）。结论：不同的表面处理技术改变了钛材料表面的微形貌并影响了钛的耐腐蚀性能，经阳极氧化处理后的纳米级表面具有更好的耐腐蚀性能，喷砂会使钛的耐腐蚀性降低。
目的：評價不同方法錶麵處理後純鈦錶麵粗糙程度對其耐腐蝕性能的影響。方法：製備33箇純鈦試件併隨機分為3組，分彆進行噴砂、暘極氧化和機械拋光處理，應用掃描電鏡觀察不同處理後鈦件錶麵微形貌，在痠性含氟人工唾液中測試開路電位和暘極極化麯線。結果：掃描電鏡結果顯示噴砂後鈦錶麵有大量的彈坑和劃痕，深度較深，且形狀不規則，大小不一，邊緣銳利，為微米級粗糙錶麵形態；而暘極氧化錶麵為大小均一的直徑80 nm的納米管狀結構，為納米級粗糙錶麵形態；機械拋光錶麵劃痕明顯，深度較淺，為微米級粗糙錶麵形態。在痠性含氟人工唾液中，3組之間自腐蝕電位值的比較為：暘極氧化組＞機械拋光組＞噴砂組；腐蝕電流密度值的比較為：噴砂組＞機械拋光組＞暘極氧化組，具有顯著性差異（P＜0.05）。結論：不同的錶麵處理技術改變瞭鈦材料錶麵的微形貌併影響瞭鈦的耐腐蝕性能，經暘極氧化處理後的納米級錶麵具有更好的耐腐蝕性能，噴砂會使鈦的耐腐蝕性降低。
목적：평개불동방법표면처리후순태표면조조정도대기내부식성능적영향。방법：제비33개순태시건병수궤분위3조，분별진행분사、양겁양화화궤계포광처리，응용소묘전경관찰불동처리후태건표면미형모，재산성함불인공타액중측시개로전위화양겁겁화곡선。결과：소묘전경결과현시분사후태표면유대량적탄갱화화흔，심도교심，차형상불규칙，대소불일，변연예리，위미미급조조표면형태；이양겁양화표면위대소균일적직경80 nm적납미관상결구，위납미급조조표면형태；궤계포광표면화흔명현，심도교천，위미미급조조표면형태。재산성함불인공타액중，3조지간자부식전위치적비교위：양겁양화조＞궤계포광조＞분사조；부식전류밀도치적비교위：분사조＞궤계포광조＞양겁양화조，구유현저성차이（P＜0.05）。결론：불동적표면처리기술개변료태재료표면적미형모병영향료태적내부식성능，경양겁양화처리후적납미급표면구유경호적내부식성능，분사회사태적내부식성강저。
Objective:To evaluate the corrosion resistance of different roughness surface of the titanium after different surface treat -ment.Methods:Thirty-three pure titanium specimens were cast and divided into three groups randomly , and then were treated by sandblasting, anodic oxidation and mechanical polishing separately.SEM was thereafter used to observed the surface of titanium after modification.Open circle potential and anode polarization curve were determined in acid artificial saliva containing fluoride .Results:SEM results showed that the surface of titanium after sandblasting exhibited micro-topographical massive deep scratches and pits of ir-regular shape, different size and sharp edge.But on the anodic oxidation surface nanotopographic , 80 nm-diameter nanotubes were formed.The surface of titanium after mechanical polishing had micro-topographic shallow scratches.In the acid artificial saliva,the cor-rosion potentials of three groups were in the sequence of anodic oxidation group >mechanical polished group >sandblasted group.The corrosion currents of three groups were sandblasted group >mechanical polished group >anodic oxidation group.Both data have statisti-cal significance.Conclusions:Different surface modifications changed the topography of the titanium and affected the titanium 's corro-sion resistance.The nanotopograhpy of titanium achieved by anodic oxidation had better corrosion resistance and sandblasting reduced the corrosion resistance of titanium.
