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National Technical Committee 461 on Synthetic Crystals of Standardization Administration of China

The first committee of National Technical Committee 461 on Synthetic Crystals of Standardization Administration of China (TC461) was established in September 2008, and the Second Committee was established in October 2015 (approved by the National Standardization Administration Commission (Comprehensive letter [2015] No. 75 from the office of National Standard Committee), with the Secretariat of Beijing Sinoma Synthetic Crystals Co., Ltd. , Donghai Quality Control & Inspection Center and Institute of Sinoma Synthetic Crystals. It is mainly responsible for the formulation and revision of national standards in the field of Synthetic Crystals (except medical), including the standardization of synthetic crystals materials and devices, raw materials for crystal growth, testing instruments for crystal performance, crystal processing equipment and special equipment for crystal growth, application technology specification and management.

Artificial synthetic crystal technology refers to the preparation of single crystal or polycrystalline materials by artificial synthesis, involving physics, chemistry, crystallography and material preparation technology; it is specifically divided into laser crystal, nonlinear optical crystal, semiconductor crystal, scintillation crystal, optical crystal (including sapphire crystal), piezoelectric crystal, superhard crystal, insulating crystal, and artificial synthetic crystal material processing technology. It can be widely used in modern military technologies such as guidance, ranging, imaging, optoelectronic countermeasures, laser tactical weapons, missiles, rockets and other fields, as well as satellites, manned spacecraft, communications, computers, medical treatment, nuclear physics, detection, home appliances, industrial electronic equipment and other fields.

Artificial synthetic crystal is an important part of new materials. It is a key development area supported by the national medium and long-term science and technology development plan, major key engineering technologies in the next 20 years, strategic emerging industries and the 13th five year development guide for new materials industry.

Standard system framework in the field of Synthetic Crystals:

List of current standards for synthetic crystals:

Serial Number

Type

Standard Number

Standard Name

1

National

GB/T 39131-2020

Terms and definitions of synthetic crystal materials

2

National

GB/T 39123-2020

Specification for cadmium-zinc telluride single crystal material for X-ray and γ-ray detector

3

National

GB/T 32988-2016

Synthetic quartz crystal wafer for optical low pass filter (OLPF)

4

National

GB/T 29420-2012

Nd-doped vanadate laser crystal devices

5

National

GB/T 29421-2012

Vanadate birefringent crystal devices

6

National

GB/T 7895-2008

Optical Grade Synthetic Quartz Crystal

7

National

GB/T 7896-2008

Test Method for Optical Grade Synthetic Quartz Crystal

8

National

GB/T 16863-1997

Method for texting refractive index of crystals

9

Industrial

JC/T 2512-2019

Technical requirements of high gray-tracking resistance potassium titanyl phosphate (HGTR-KTP) crystal devices for diode pumped solid state laser

10

Industrial

JC/T 2513-2019

Test method for gray-track resistance of potassium titanyl phosphate crystal devices

11

Industrial

JC/T 2545-2019

High performance pyroelectric single crystals for infrared detectors

12

Industrial

JC/T 2416-2016

Relaxor ferroelectric crystals

13

Industrial

JC/T 2417-2016

Lithium Tetraborate Piezoelectirc Single Crystals

14

Industrial

JC/T 2418-2016

General technical condition and measuring method of Neodymium-doped Gadolinium Yttrium Calcium Oxoborate laser crystal with second harmonic generation

15

Industrial

JC/T 2419-2016

Potassium titanyl phosphate (KTP) crystal for optical parametric oscillation

16

Industrial

JC/T 2420-2016

Grit and Stick of CVD Diamond

17

Industrial

JC/T 817-2014

Gem grade synthetic cubic zirconia crystals

18

Industrial

JC/T 2249-2014

Cristobalite

19

Industrial

JC/T 2250-2014

Fused Silica

20

Industrial

JC/T 439-1991(1996)

Zinc sulfide crystals for the window of infrared detector

21

Industrial

JC/T 813-1985

Fusion-cast synthetic mica

22

Industrial

JC/T 814-1985

Testing method of Fusion-cast synthetic mica

23

Industrial

JC 467-1992(1996)

Synthetic Mica Pearlescent Pigments

24

Industrial

JC/T458-1992(1996)

Diamond Grinding wheel

25

Industrial

JC/T816-1985(1996)

Synthetic diamond thin-wall bit

26

Industrial

JC/T 425-19911996

Glassy carbon materials

27

Industrial

JC/T 471-19921996

Synthetic quartz crystal for photosensitive detector

Relevant standards involved in the formulation and revision: Evaluation requirements for green factories in synthetic crystals industry (2020-0448T-JC)

Standard development and revision projects under research:

Serial Number

Type

Project Number

Standard Name

1

National

20173755-T-609

Cerium bromide scintillator

2

National

20173472-T-609

Specification of sapphire plate for laser window

3

National

20173471-T-609

Method for measuring refractive index of uniaxial optical crystals

4

National

20184214-T-609

Bismuth germanate scintillation crystal for positron emission tomography

5

National

20193114-T-609

Test methods of optical and laser performance for chromium and erbium co-doped yttrium scandium gallium garnet crystal

6

Industrial

2016-1656T-JC

Rare earth oxides for scintillation crystals

7

Industrial

2016-1655T-JC

The powder catalyst used for diamond synthesiss

8

Industrial

2016-1654T-JC

Zinc sulfide crystals for the window of infrared detector

9

Industrial

2017-0406T-JC

Titanium doped sapphire laser crystal

10

Industrial

2018-0402T-JC

Cerium doped lanthanum bromide scintillator

11

Industrial

2018-1963T-JC

Er doped yttrium scandium gallium garnet laser crystal devices

12

Industrial

20180401T-JC

Specification for cerium doped lutetium silicate single crystal materials

13

Industrial

2018-2259T-JC

Europium doped strontium iodide scintillator

14

Industrial

2019-0157T-JC

Laser Level Modules

15

Industrial

2019-0156T-JC

Terbium Gallium GarnetTGGMagneto-optical Crystal

16

Industrial

2020-1582T-JC

Fusion-cast synthetic mica

17

Industrial

2020-1606T-JC

Testing method of Fusion-cast synthetic mica

18

Industrial

2020-1583T-JC

Large size rare earth oxide crystals

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