中华口腔医学杂志
中華口腔醫學雜誌
중화구강의학잡지
Chinese Journal of Stomatology
2012年
9期
557-561
,共5页
钛%氟%腐蚀%等离子渗氮%镀膜
鈦%氟%腐蝕%等離子滲氮%鍍膜
태%불%부식%등리자삼담%도막
Titanium%Fluorine%Corrosion%Plasma nitriding%TiN-coated
目的 通过研究等离子渗氮和镀膜复合氮化处理后纯钛在含不同质量浓度氟的人工唾液中的耐腐蚀性能,探讨复合氮化处理能否提高纯钛的耐蚀性,以期为表面改性技术在口腔的应用提供参考.方法 用动电位极化法描绘复合处理组和未处理组纯钛铸件在氟离子质量浓度为0、500及2000 mg/L的人工唾液巾的极化曲线,得出自腐蚀电流密度和自腐蚀电位,并进行双因素方差分析.扫描电镜观察各组试件表面形貌.结果 未处理组和复合处理组纯钛铸件在氟离子为0、500、2000 mg/L的人工唾液巾的自腐蚀电流密度分别为(1530.23±340.12)、(2290.36±320.10)、(4130.52±230.17)和(2.62 ±0.64)、(7.37±3.59)、(10.76±6.05) nA,自腐蚀电位分别为(-0.93±0.10)、(-0.89 ±0.21)、(-0.57±0.09)和(-0.21±0.04)、(-0.17±0.03)、(-0.22±0.03)V.复合氮化处理后纯钛铸件的自腐蚀电流密度明显降低(P＜0.01),而不断增加的氟离子质量浓度使复合处理组和未处理组的自腐蚀电流密度逐渐增大(P＜0.01).复合处理后纯钛铸件的自腐蚀电位明显增大(P＜0.01).扫描电镜显示,复合处理组纯钛的腐蚀较未处理组明显减轻.随氟离子质量浓度的增加,两组试件表面腐蚀均加重.结论 等离子渗氮和镀膜复合氮化处理能明显提高纯钛在人工唾液中的耐蚀性.逐渐增大的氟离子质量浓度使复合处理组和未处理组纯钛的耐蚀性降低.
目的 通過研究等離子滲氮和鍍膜複閤氮化處理後純鈦在含不同質量濃度氟的人工唾液中的耐腐蝕性能,探討複閤氮化處理能否提高純鈦的耐蝕性,以期為錶麵改性技術在口腔的應用提供參攷.方法 用動電位極化法描繪複閤處理組和未處理組純鈦鑄件在氟離子質量濃度為0、500及2000 mg/L的人工唾液巾的極化麯線,得齣自腐蝕電流密度和自腐蝕電位,併進行雙因素方差分析.掃描電鏡觀察各組試件錶麵形貌.結果 未處理組和複閤處理組純鈦鑄件在氟離子為0、500、2000 mg/L的人工唾液巾的自腐蝕電流密度分彆為(1530.23±340.12)、(2290.36±320.10)、(4130.52±230.17)和(2.62 ±0.64)、(7.37±3.59)、(10.76±6.05) nA,自腐蝕電位分彆為(-0.93±0.10)、(-0.89 ±0.21)、(-0.57±0.09)和(-0.21±0.04)、(-0.17±0.03)、(-0.22±0.03)V.複閤氮化處理後純鈦鑄件的自腐蝕電流密度明顯降低(P＜0.01),而不斷增加的氟離子質量濃度使複閤處理組和未處理組的自腐蝕電流密度逐漸增大(P＜0.01).複閤處理後純鈦鑄件的自腐蝕電位明顯增大(P＜0.01).掃描電鏡顯示,複閤處理組純鈦的腐蝕較未處理組明顯減輕.隨氟離子質量濃度的增加,兩組試件錶麵腐蝕均加重.結論 等離子滲氮和鍍膜複閤氮化處理能明顯提高純鈦在人工唾液中的耐蝕性.逐漸增大的氟離子質量濃度使複閤處理組和未處理組純鈦的耐蝕性降低.
목적 통과연구등리자삼담화도막복합담화처리후순태재함불동질량농도불적인공타액중적내부식성능,탐토복합담화처리능부제고순태적내식성,이기위표면개성기술재구강적응용제공삼고.방법 용동전위겁화법묘회복합처리조화미처리조순태주건재불리자질량농도위0、500급2000 mg/L적인공타액건적겁화곡선,득출자부식전류밀도화자부식전위,병진행쌍인소방차분석.소묘전경관찰각조시건표면형모.결과 미처리조화복합처리조순태주건재불리자위0、500、2000 mg/L적인공타액건적자부식전류밀도분별위(1530.23±340.12)、(2290.36±320.10)、(4130.52±230.17)화(2.62 ±0.64)、(7.37±3.59)、(10.76±6.05) nA,자부식전위분별위(-0.93±0.10)、(-0.89 ±0.21)、(-0.57±0.09)화(-0.21±0.04)、(-0.17±0.03)、(-0.22±0.03)V.복합담화처리후순태주건적자부식전류밀도명현강저(P＜0.01),이불단증가적불리자질량농도사복합처리조화미처리조적자부식전류밀도축점증대(P＜0.01).복합처리후순태주건적자부식전위명현증대(P＜0.01).소묘전경현시,복합처리조순태적부식교미처리조명현감경.수불리자질량농도적증가,량조시건표면부식균가중.결론 등리자삼담화도막복합담화처리능명현제고순태재인공타액중적내식성.축점증대적불리자질량농도사복합처리조화미처리조순태적내식성강저.
Objective To study the corrosion resistance of casted titanium by plasma nitriding and TiN-coated compound treatments in the artificial saliva with different fluoride concentrations and to investigate whether compound treatments can increase the corrosion resistance of casted titanium.Methods Potentiodynamic polarization technique was used to depict polarization curve and to measured the current density of corrosion(Icorr) and the electric potential of corrosion(Ecorr) of casted titanium( Group A) and casted titanium by compound treatments (Group B ) in the artificial saliva with different fluoride concentrations. After electrochemical experiment,the microstructure was observed by scanning electron microscope(SEM). Results The Icorrs of Group A and B in the artificial saliva of different fluoride concentrations were (1530.23 ±340.12),(2290.36 ±320.10),(4130.52 ± 230.17) nA and (2.62 ±0.64),(7.37 ± 3.59),(10.76 ± 6.05) nA,respectively. The Ecorrs were ( - 0.93 ± 0.10),(-0.89±0.21),(-0.57±0.09) V and ( -0.21 ±0.04),(-0.17±0.03),(-0.22±0.03) V,respectively.The Icorrs of Group B were significantly lower( P ＜ 0.01 )than that of Group A. The Icorrs increased significantly with the increasing of fluoride concentrations( P ＜ 0.01 ).The Ecorrs of Group B were significantly higher than that of Group A(P ＜ 0.01 ). The SEM confirmed the microstructure in the casted titanium was much severely than that in Group B,the microstructure in Group A and B corroded more and more heavily with increasing of fluoride concentrations. Conclusions The increase of fluoride concentrations influence the corrosion resistance of both treated and untreated casted titanium negatively,but plasma nitriding and TiN-coated compound treatments can significantly increase the corrosion resistance of casted titanium.
