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陶瓷纤维在汽车制造行业中有了新的用途。在汽车的设计中用陶瓷纤维代替石棉,即将陶瓷纤维制品安装在汽车发动机的出气管前和排气管上,起到隔焰和吸收废气的作用,经这种排气管排出的废气符合废气排放标准。用于发动机排气管的陶瓷纤维制品是以氧化铝和二氧化硅为主要成分的。它有许多不同形态的制品,这些陶瓷制品可在1600℃高温下连续工作,并具有热传导率低、耐化学腐蚀、吸声性能好、抗振动、轻质、耐火、不燃烧等优点。在汽车发动机双层排气管特别是排气管的前部,用陶瓷纤维薄毡包住里面的管子,再用金属外壳套在薄毡外面。陶瓷纤维棉和纤维薄毡做成吸声器的衬垫,起消音和隔音作用,陶瓷纤维纸和纤维毛也可做成陶瓷棉隔音层间隙的夹层。另外,陶瓷纤维块已经取代石棉,成为制造离合器刹车片的新材料,也可把陶瓷纤维掺加到新型耐热塑料中,做成汽车底部的隔热罩。在合金复合材料中,掺入多晶型陶瓷纤维,是制造柴油机活塞的新型材料。 (田怡译自联邦德国《国际陶瓷论坛》1987年6/7月)
Ceramic fibers have new uses in the automotive industry. In the car’s design, ceramic fiber instead of asbestos, ceramic fiber products will soon be installed in the car engine before the exhaust pipe and the exhaust pipe, play a role in blocking flame and absorption of exhaust through the exhaust pipe exhaust emissions in line with the exhaust Emission Standards. Ceramic fiber products for the engine exhaust pipe are made of alumina and silica as the main components. It has many different forms of products, these ceramics can work continuously at high temperature of 1600 ℃, and has low thermal conductivity, chemical resistance, good sound absorption, anti-vibration, light, fire-resistant, non-flammable and so on. In the car engine double exhaust pipe, especially the front of the exhaust pipe, with ceramic fiber mat wrapped inside the tube, and then cover the metal outer cover outside the mat. Ceramic fiber cotton fiber mat made of fiber mat and sound absorber liner, played the role of noise and sound insulation, ceramic fiber paper and fiber wool can also be made of ceramic cotton sound insulation interlayer gap. In addition, the ceramic fiber block has replaced asbestos, a new material for the manufacture of clutch brake pads, ceramic fibers can also be spliced into the new heat-resistant plastic, made the car at the bottom of the heat shield. In the alloy composite materials, the incorporation of polymorphic ceramic fibers, is the manufacture of diesel piston new material. (Tian Yi translated from the Federal Republic of Germany “International Ceramics Forum” 1987 June / July)