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  Use of nano zirconia phase transformation toughening and nanoparticles toughening effect, improve the comprehensive mechanical properties of the alumina substrate. Adding different content in alumina substrate 3 y - ZrO2 nanoparticles, nano ZrO2 content is 15 wt % A15Z comprehensive mechanical properties of materials to achieve the best (bending strength 766.74 MPa, 6.13 MPa for fracture toughness m1/2, vickers hardness 18.32 GPa), showed that adding nanometer zirconium oxide composite cutting tool material mechanical performance than single phase alumina materials. 

  Traditional ceramic in order to improve the hardness and light permeability, often need to add the alumina micro particle materials, but alumina ceramics has the characteristics of brittle, determines its function cannot be used in the manufacture of ceramic parts, such as ceramic knife. Need not only a good ceramic knife is quite rigid, need more good toughness, so need to be added in the ceramic slurry highly dispersed nano zirconia materials, then after crystal or other pressure molding process such as forming low temperature sintering. Nano zirconia ceramic is the important raw material for functional components, it can give good toughness and wear resistance of ceramic components, in addition to the ceramic knife, such as ceramic ring, ceramic watch case, ceramic mixer and other products are added to suzhou optimal zirconium nanometer zirconium oxide can be produced.

  The advantages of ceramic knife:

  1 - high wear resistance

  Wearability is metal knife 60 times, use for a long time, in the process of eliminating the repeated sharpen the worry, is known as "never wear type" tool.

  2 - hard and sharp

  Hardness can reach HRC85 above, second only to diamond, hardness is strong, so the edge is very sharp, cutting meat, vegetables and fruits, with ease, no static, nonmagnetic, small friction, processed food is not easy to adhesion, can cut out the meat as thin as paper, very light energy, and not the edge.

  3 - no peculiar smell

  Traditional metal knives, because its surface has numerous wool stoma, food ingredients with sauce residue in wool stoma, and can oxidize metal elements, form odor or metallic taste; Ceramic knife is non-toxic, no pollution, no oxidation, no rust, of various kinds of organic matter such as acid and alkali resistant, cut vegetables or fruit, won't produce peculiar smell.

  4 - health antibacterial

  Nanoscale materials, compact structure, no pores, no contamination, easy washing, can effectively inhibit bacterial growth, use for a long time, is good for health, is environmentally friendly tool.

  5 - use of portable

  The proportion of ceramic materials is about two-thirds of the metal materials, so don't like to use metal knives have heaviness, was deeply loved by modern women.

  6 - easy to clean

  7 - especially suitable for handling raw fish, fruit and vegetable salads, cooked food, roast duck, preserved egg cutting cut, cut bread, sausage, cut the potatoes and other ingredients, the clean health, can be as thin as paper, fine as silk. With ceramic knife after the stimulation such as Onions and garlic flavor food, simply rinse, no any smell, then cut the other food not changing.