Introduction to New Research and Discoveries in Engineering Ceramic Materials

1. 2.1 Classification and characteristics

Ceramic materials are typical hard and brittle materials. Before the mid to late 20th century, people believed that zirconia ceramic materials were either non machinable or non machinable, so they could only be processed into the desired shape when making green billets, and then directly used after firing. The main reason, apart from the hard and brittle properties of ceramic materials themselves, was the lack of processing tools and means at that time. Although diamond, vertical Boron nitride and other Superhard material whose hardness is much higher than that of ceramic materials have been discovered for a long time, the machining of ceramic materials has only been developed in recent decades. Only when diamond and cubic Boron nitride are made into machining tools and suitable machining methods are found, the grinding of hard and brittle ceramic materials is realized. After entering the 21st century, it has developed into precision machining and micro nano machining.

Ceramics are generally a polycrystalline and multiphase material structure containing glass and porous phases. The vast majority of ceramics are compounds composed of one or several metallic and non-metallic elements. According to performance and purpose, ceramics can be divided into traditional ceramics and special ceramics. With the development of modern technology, alumina ceramics are constantly given new names and definitions, such as fine ceramics, high-performance ceramics, advanced ceramics, etc. Traditional ceramics are made from natural Silicate mineral by crushing, molding and sintering. They are mainly used as daily ceramics, architectural ceramics and sanitary ceramics. Although they require no deformation and beautiful appearance after sintering, they do not require high strength. Engineering ceramics are made from synthetic compounds (such as oxides, nitrides, carbides, Boride, etc.) and are mainly used in technology and industry.

1. 2.1 Classification and characteristics

Ceramic materials are typical hard and brittle materials. Before the mid to late 20th century, people believed that zirconia ceramic materials were either non machinable or non machinable, so they could only be processed into the desired shape when making green billets, and then directly used after firing. The main reason, apart from the hard and brittle properties of ceramic materials themselves, was the lack of processing tools and means at that time. Although diamond, vertical Boron nitride and other Superhard material whose hardness is much higher than that of ceramic materials have been discovered for a long time, the machining of ceramic materials has only been developed in recent decades. Only when diamond and cubic Boron nitride are made into machining tools and suitable machining methods are found, the grinding of hard and brittle ceramic materials is realized. After entering the 21st century, it has developed into precision machining and micro nano machining.

Ceramics are generally a polycrystalline and multiphase material structure containing glass and porous phases. The vast majority of ceramics are compounds composed of one or several metallic and non-metallic elements. According to performance and purpose, ceramics can be divided into traditional ceramics and special ceramics. With the development of modern technology, alumina ceramics are constantly given new names and definitions, such as fine ceramics, high-performance ceramics, advanced ceramics, etc. Traditional ceramics are made from natural Silicate mineral by crushing, molding and sintering. They are mainly used as daily ceramics, architectural ceramics and sanitary ceramics. Although they require no deformation and beautiful appearance after sintering, they do not require high strength. Engineering ceramics are made from synthetic compounds (such as oxides, nitrides, carbides, Boride, etc.) and are mainly used in technology and industry.

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