PRODUCTS

           •  Tungsten (W)

           •  Molybdenum (Mo)

           •  Titanium (Ti)

Advanced Applications

         •  High Temperature Vacuum
　       Technology

         •  Medical Technology

         •  Mono Silicon & Sapphire 
　       Technology

         •  Ceramic & Glass Technology

         •   PVD Coating Technology

         •   Power Electrical Technology

Monocrystalline Silicon & Sapphire Technology
            

Crystal growth is a major stage of a crystallization process, which typically follows an initial stage of either homogeneous or heterogeneous (surface catalyzed) nucleation.

Crystal growth is a significant step for the semiconductor industry as well as for optical applications and solar industries. Sapphire single crystals are used for high power laser optics, high pressure components and substrates for LEDs. Aluminum Nitride(AlN) single crystals are the principal components for fabricating UV-LEDs and laser diodes (LDs).

Our Products——                                                                                                                                      

• Mo Crucibles——for single crystal growing application

completely seamless Mo Crucible with thin wall 1.5~3mm

• Tungsten Crucibles & Heating shields——for LED Sapphire single crystal growing application   

Tungsten crucibles is most important key parts in LED sapphire single crystal growth ways which are always used in application for your high temperature melting furnace. We can produce many varieties of tungsten and molybdenum crucibles for single crystal growing process as a high temperature durability container in this application with its best properties.  ²        W crucibles  ²        Mo crucibles  ²        Customized crucibles ²        Lids ²        Dies ²        Heating shields

1、Physical and chemical properties

(1) Density： 18.3~19.2g /cm3

(2) Surface roughness： < 3.2μm

(3) Purity：W99.97%（min.）

(4) Application temperature environment：1800~2750℃。 

2、Specifications：

1）Dimensions and tolerances Unit：mm

Delivery condition	Specification		Tolerance		Thickness	Roughness   (μm)
	Diameter	Height	Diameter	Height
Sintering	10~500	10~750	±3.0	±3.0	8~20
Final Finished	10~450	10~550	±0.5	±1.0	7~18	＜3.2

Special sizes can be manufactured based on customers' requirements 

3、Manufacturing process and equipment

Item	Process	Equipment	Quality Check
1	Powder purified	Purified furnace	GDMS
2	Isostatic pressing	Isostatic pressing machine	Measurement of rough-processed
3	IF forging	High-accuracy forging machine	Dimension measurements for product
4	IF sintering	High temperature vacuum sintering furnace	Dimension measurements for product
5	Final machining	High-accuracy turning machine	Surface quality/ roughness and density
6	Package		Quality Test Report

 4、Applications

Tungsten has a unique property of which it's melting point can reach 3410℃, tungsten crucible is widely applied in high temperature vacuum furnace melting environment such as sapphire growing furnace, quartz glass melting furnace, and special ceramic sintering furnace. The working temperature of tungsten crucible is above 2000℃. For sapphire crystal growing furnace, tungsten crucible with the specification of high-purity, high-density, no crack, exact dimension measurement and smooth surface and low-carbon, low-oxygen, low-iron so on has decisive influence on the success of crystal growth, quality control of pulling crystal, discharging and service life during sapphire growing process.

• Mo Wire —— for Monocrystalline Silicon growing furnace application

                                         Mo Wire/Coil                                     Mo Wire package

• Mo shielding Sheets ——for PolySilicon growing furnace application

                                                                  Mo shielding Sheets

Whether your high temperature, high purity requirements are conventional or exotic, XGM  has the better solutions for you.

Advantage of XGM Monocrystalline Silicon & Sapphire growing application parts:

- long term stock for your ready choice     

- smoothed forged and chemically cleaned surface with quality     

- uniform grain with densified microstructure ensures longer lifetime

- ready for use parts with precise machining tolerance.