caa a22 4500 388022779 CHVBK 20180307124929.0 cr unu---uuuuu 161130e199805 xx s 000 0 eng 10.1557/JMR.1998.0179 doi S0884291400044150 pii (NATIONALLICENCE)cambridge-10.1557/JMR.1998.0179 Graded coatings by gradient temperature densification [Elektronische Daten] Functionally gradient materials (FGM) were prepared using layers of ZrO2 -3 mol% Y2O3 ceramic and NiCrAlY powders. A fine-grained zirconia powder was chosen to lower the ceramic sintering temperature and achieve simultaneous metal and ceramic densification. Consolidation of FGM's was achieved by a short time field-assisted sintering technique. Sintering was performed either at a constant temperature or in a temperature gradient by using punches made of different materials (i.e., one graphite and one tungsten). A temperature gradient of at least 100 °C was required with a low value of 1200 °C at the metal end and exceeding 1300 °C at the ceramic end. Increasing the number of intermediate layers alleviates some of the cracks formed during sintering due to different coefficients of thermal expansion. Copyright © Materials Research Society 1998 Hur Sung Kang Department Materials Science and Technology, Chang-won University, Korea Yoo Sang H. Department of Chemical Engineering/Materials Science and Mechanical Engineering, University of California at Davis, Davis, California 95616-5294 Groza Joanna R. Department of Chemical Engineering/Materials Science and Mechanical Engineering, University of California at Davis, Davis, California 95616-5294 Doh Jung Man Division of Metals, Korea Institute of Science and Technology, Seoul, Korea Yamazaki Kazuo Department of Chemical Engineering/Materials Science and Mechanical Engineering, University of California at Davis, Davis, California 95616-5294 Shoda Kazuo Sodick Co., Ltd., 3-12-1 Nakamuchidai, Midoriky, Yokohama, Japan Journal of Materials Research Cambridge University Press 13/5(1998-05), 1255-1259 0884-2914 13:5<1255 1998 13 JMR https://doi.org/10.1557/JMR.1998.0179 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1557/JMR.1998.0179 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hur Sung Kang Department Materials Science and Technology, Chang-won University, Korea NATIONALLICENCE 700 1- Yoo Sang H. Department of Chemical Engineering/Materials Science and Mechanical Engineering, University of California at Davis, Davis, California 95616-5294 NATIONALLICENCE 700 1- Groza Joanna R. Department of Chemical Engineering/Materials Science and Mechanical Engineering, University of California at Davis, Davis, California 95616-5294 NATIONALLICENCE 700 1- Doh Jung Man Division of Metals, Korea Institute of Science and Technology, Seoul, Korea NATIONALLICENCE 700 1- Yamazaki Kazuo Department of Chemical Engineering/Materials Science and Mechanical Engineering, University of California at Davis, Davis, California 95616-5294 NATIONALLICENCE 700 1- Shoda Kazuo Sodick Co., Ltd., 3-12-1 Nakamuchidai, Midoriky, Yokohama, Japan NATIONALLICENCE 773 0- Journal of Materials Research Cambridge University Press 13/5(1998-05), 1255-1259 0884-2914 13:5<1255 1998 13 JMR CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge