TY - JOUR ID - 90756 TI - Effect of NiTi Addition on the Wear Resistance of YSZ Coatings JO - Advanced Ceramics Progress JA - ACP LA - en SN - 2423-7477 AU - Mansourinejad, Noushin AU - Farvizi, Mohammad AU - Shirvani, Kourosh AU - Rahimipour, Mohammad Reza AU - Razavi, Mansour AD - Ceramic Division, MERC AD - Research Department of Ceramic, MERC, Alborz, Iran AD - Iranian Research Organization for Science and Technology Y1 - 2017 PY - 2017 VL - 3 IS - 3 SP - 32 EP - 37 KW - Air plasma spraying (APS) KW - Yttria stabilized zirconia (YSZ) KW - NiTi KW - Wear DO - 10.30501/acp.2017.90756 N2 - In this study, small fraction of NiTi (5 wt%) was added to Yttria stabilized zirconia (YSZ) top coat to improve it sliding wear resistance. The measurement of width of wear tracks after wear tests under a 15 N load for 100 m sliding distances showed that the width of wear track in NiTi-YSZ coating is shorter than that in YSZ coating which depicts the higher wear resistance of NiTi-YSZ coating samples. It is believed that the higher H/E value and pseudoelasticity effect of NiTi are two important factors which improved the wear performance of applied coatings. Also, to evaluate the role of addition of a NiTi (5 wt%)–YSZ buffer layer on the durability of YSZ coatings during wear operation, wear tests with a 20 N normal load and with a constant frequency were conducted on coated samples. It was observed that the conventional YSZ coating cracked and delaminated after about 60 m sliding distance. However, in samples which contain a NiTi (5 wt%) –YSZ buffer layer delamination was not observed until 100 m sliding distance which is attributed to the ability of NiTi for accommodation of interface stresses and hindering of premature delamination during wear test under higher loads. UR - https://www.acerp.ir/article_90756.html L1 - https://www.acerp.ir/article_90756_ead50bc1aae0fc033d6b9b173237810d.pdf ER -