Radial fretting behaviours of dental feldspathic ceramics against different counterbodies

被引:11
作者
Zhu, MH
Yu, HY
Cai, ZB
Zhou, ZR [1 ]
机构
[1] SW Jiaotong Univ, Key Lab Adv Technol Mat, Tribol Res Inst, Minist Educ, Chengdu 610031, Peoples R China
[2] Sichuan Univ, W China Coll Stomatol, Chengdu 610041, Peoples R China
基金
中国国家自然科学基金;
关键词
radial fretting; wear; cracking; dental feldspathic ceramics;
D O I
10.1016/j.wear.2005.02.010
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
Radial fretting is a fretting phenomenon mainly induced by oscillating normal loads or thermal cycling, where the two surfaces keep in contact and no impact action occurs. In fact, such fretting mode is frequently encountered in oral environment after prosthesis insertion. In this paper, radial fretting tests on two types of ball specimens (52100 steel and Si3N4 ceramics) with diameter of 12mm against the dental feldspathic ceramics flats (Cerec Vita Mark 11) have been carried out. Maximum normal load (F-max) was varied from 100N to 800 N with a constant speed of 12 mm/min, and the number of cycles from 1 to 10(5). In order to maintain the surfaces of flat and ball specimens in contact and avoid an impact effect, a minimum normal load was set at 50N. The kinetics behaviours of the feldspathic ceramics under different normal loads were analyzed in details. The fretting scars, which were examined by optical microscope and laser confocal scanning microscope (LCSM), were displayed as the worn zones in shape of annular. The critical normal load of cracks initiation was verified. Below the critical normal load, the damage mechanisms were the combination of adhesion and delamination. Above the critical normal load, four damage zones were analyzed. To clarify the experimental results, the analysis of classic Hertzian theory has been discussed. It was also found that the radial fretting damages greatly decreased when a drop of oil was added into the contact interfaces. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:996 / 1004
页数:9
相关论文
共 17 条
[1]   EFFECT OF GRAIN-SIZE ON HERTZIAN CONTACT DAMAGE IN ALUMINA [J].
GUIBERTEAU, F ;
PADTURE, NP ;
LAWN, BR .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1994, 77 (07) :1825-1831
[2]   An innovative system for fretting wear testing under oscillating normal force [J].
Huq, MZ ;
Butaye, C ;
Celis, JP .
JOURNAL OF MATERIALS RESEARCH, 2000, 15 (07) :1591-1599
[3]  
Johnson K, 1961, J Mech Engng Sci, V3, P362
[4]  
Johnson KL., 1985, CONTACT MECH
[5]   THE IMPACT FRETTING WEAR OF A NUCLEAR-REACTOR COMPONENT [J].
JONES, DH ;
NEHRU, AY ;
SKINNER, J .
WEAR, 1985, 106 (1-3) :139-162
[6]  
KENNEDY NG, 1956, P INT C FAT MET LOND, P282
[7]   THE SIGNIFICANCE OF SHEAR AND NORMAL FORCE COMPONENTS ON TUBE WEAR DUE TO FRETTING AND PERIODIC IMPACTING [J].
KO, PL .
WEAR, 1985, 106 (1-3) :261-281
[8]   IMPACT FRETTING WEAR IN CO2-BASED ENVIRONMENTS [J].
LEVY, G ;
MORRI, J .
WEAR, 1985, 106 (1-3) :97-138
[9]   LABORATORY TESTING OF DISPLACEMENT AND LOAD-INDUCED FRETTING [J].
MOHRBACHER, H ;
CELIS, JP ;
ROOS, JR .
TRIBOLOGY INTERNATIONAL, 1995, 28 (05) :269-278
[10]   Mechanical characterization of dental ceramics by hertzian contacts [J].
Peterson, IM ;
Pajares, A ;
Lawn, BR ;
Thompson, VP ;
Rekow, ED .
JOURNAL OF DENTAL RESEARCH, 1998, 77 (04) :589-602