Material

NAC manufactures forsterite using carefully selected materials and under dense and meticulous quality control.

Ceramic Parts Hong Kong manufactures Translucent Alumina ceramic which has high total light transmittance and high mechanical strength like single crystal sapphire.

Nishimura handle high purity alumina (99.7~99.99%)

Alumina is a fine ceramic with remarkable electrical insulation, corrosion resistance against acids and alkalis, and abrasion resistance. It is applied to various purposes including machine parts and electronic equipment parts.

N-9H and N-6H, mainly made from alumina, are categorized in this group.
These materials have a high thermal emissivity, and they are applied to new types of heat sinks utilizing heat radiation.

Nishimura has developed new ceramic material grade which has almost zero thermal expansion near the room temperature.
Compare with other type of low thermal expansion ceramics, N-600 has outstanding performance below.

Super pure and ultrafine particle alumina. Reflect electromagnetic wave of visible light region very well. reflectivity is 90 – 94%.
Also it is strong for ultraviolet rays.

Zirconia Alumina is made by adding zirconia, which has high wear resistance and high fracture toughness, to hard and high thermal conductivity alumina.

Well thermal conductivity and electric insulation.
Excellent at thermal shock. ALN-170,200 and HYO are available.

Zirconia has high electrical insulation, chemical resistance, and remarkable strength at ordinary temperatures in comparison to other ceramics. It is used for abrasion-resistant parts, machine parts, etc.

Si3n4 is the only ceramics material with greater mechanical strength than Alumina or Carbon nitride, and with high thermal shock resistance. It is often applied for parts required high mechanical strength in a high temperature area.

Yttria has high abrasion resistance against corrosive gases and plasma, and is applied to semiconductor device parts, etc.

Zircon is composed of ZrSIO4 with excellent thermal shock resistance and low thermal expansion.

Zircon is really great as heat-resistant ceramics because it also has hi-level electric insulation at high temperatures.

-Zircon（ZrO2･SiO2）is one of the material which has good thermal shock resistance.
-We mixed zircon with cordierite. This ceramics has better resistance of thermal shock and stabler firing shrinkage than other commonly used material.

Mullite has high intensity as a alumina ceramic in room temperature. Also it is strong in high temperature condition, also, it has small CTE.

Color ceramic

Crystals of MgO and SiO2 constitute our steatite.

Main raw material is processed talc, and we add few kinds of auxiliaries.

Aluminum Titanate is composed of Al₂O₃ and TiO₂. These ceramics have the pretty good non-wettability for molten metal.

Lithium ceramic (Li2O-AL2O3-SiO2) People also called it β-spodumene or petalite.

-This ceramic is MgO･Al2O3･SiO2. and it’s consist on 2MgO･2Al2O3･5SiO2 which is cordierite crystal. This material have two type, called N-23 and N-53.
-Especially, N-53 is Nishimuras originality. its surface is like after-glazed.

This SiO2 and Al2O3 kinds ceramic is the most popular product as low cost material.
As a high tension insulator, it is used for suspension-type insulator, pin-type insulator, or bushing. Also it is used for home appliance heater supporter, porcelain bushing, plug, socket, and wiring parts as a low or middle tension insulator. If customers required outdoor usage, we can also coat it with glaze.

Nishimura Porcelain is providing “low extension rate ceramics” with showed extreme resistance against heat shock, “high visible light reflectivity ceramics” with high resistance against heat and ultraviolet light, etc.