FEDERALNOE GOSUDARSTVENNOE BYUDZHETNOE UCHREZHDENIE NAUKI INSTITUT FIZIKI PROCHNOSTI I MATERIALOVEDENIYA SIBIRSKOGO OTDELENIYA ROSSIJSKOJ AKADEMII NAUK (IFPM SO RAN)
发明人:
BUYAKOVA SVETLANA PETROVNA,Буякова Светлана Петровна,GRIGOREV MIKHAIL VLADIMIROVICH,Григорьев Михаил Владимирович,KULKOV SERGEJ NIKOLAEVICH,Кульков Сергей Николаевич,SABLINA TATYANA YUREVNA,Саблина Та
申请号：
RU2015118276/03
公开号：
RU0002585291C1
申请日:
2015.05.15
申请国别(地区):
RU
年份:
2016
代理人:
摘要：
FIELD: ceramic industry.SUBSTANCE: invention relates to production of porous ceramic material and is intended for production of artificial implants of bone tissue. Disclosed is a method of producing porous ceramic material based on zirconium dioxide, involving preparation of a thermoplastic mixture of disperse powder of zirconium dioxide stabilised 5 wt% MgO, blowing agent and a plasticiser with subsequent moulding and heat treatment. Heat treatment includes preliminary annealing with uniform heating to temperature 250±5 °C and holding for 3 hours and final annealing with uniform heating to temperature 1,650±5 °C and holding for 1 hour. Blowing agent used is powdered magnesium carbonate, aluminium hydroxide as a plasticiser-paraffin, wax in following proportions, wt%: MgCO3 10-12, Al(OH)3 5-10, paraffin 10-20, wax 1-3, powder ZrO2 (5 wt% MgO) - balance. Used powder ZrO2 comprises phase with tetragonal crystalline lattice of not less than 75 %. Prior to preparing a thermoplastic mixture, stabilised zirconium dioxide powder is activated to obtain powder with average particle size not greater than 0.5 mcm maximum particle size of not more than 1.0 mcm and shape close to spherical.EFFECT: technical result is production of ceramic material with improved operational characteristics: porosity of not less than 40 %, and ultimate compression strength of not less than 500 MPa and bimodal distribution of porosity, similar to natural bone.6 cl, 1 ex, 2 tblИзобретение относится к технологии получения пористого керамического материала и предназначено для получения искусственных эндопротезов костной ткани. Предложен способ получения пористого керамического биоматериала на основе диоксида циркония, включающий приготовление термопластичной смеси из дисперсного порошка диоксида циркония, стабилизированного 5 мас.% MgO, порообразователя и пластификатора с последующим формованием изделий и термообработкой. Термообработка включает предварительный обжиг с равномерным нагревом до температ
