Name: φ4.75mm Sintered Porous Titanium Getter For Micro Vacuum Devices Customized Suppliers, Manufacturers - Free Sample - TOPTITECH Metal Materials
Brand: TOPTITECH
SKU: 279994220

TOPTITECH's φ4.75mm Sintered Porous Titanium Getter for Micro Vacuum Devices delivers exceptional vacuum integrity in ultra-compact applications. This non-evaporable getter (NEG) utilizes a high-purity titanium powder metallurgy structure, engineered through cold isostatic pressing and high-temperature vacuum sintering. This process creates a robust monolithic form featuring high porosity and an extensive internal surface area. The getter actively pumps residual active gases-including hydrogen at room temperature and oxygen, nitrogen, carbon monoxide, upon in-situ activation. Its non-evaporative nature guarantees a clean, particle-free environment, critical for safeguarding sensitive micro-optics and electronics from contamination.

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This miniature getter is engineered for integration into hermetically sealed micro-devices where volume is severely constrained. The φ4.75mm Sintered Porous Titanium Getter for Micro Vacuum Devices provides long-term stability by chemically sorbing gas molecules, thereby maintaining the necessary vacuum level for device longevity and reliability. It finds essential roles in MEMS vacuum packaging, miniature traveling-wave tubes (TWTs), and high-reliability laser diode TO cans. Its performance ensures operational integrity by preventing cathode poisoning and inhibiting surface oxidation, which are paramount for sustained functionality in demanding aerospace, telecommunications, and medical implantable systems.

Products Specifications

Material	GR1 Titanium
Filtration grade/Pore size	10um
Diameter	4.75mm
Thickness	1.10mm
Technique	Sintering

Products Features

Superior Gas Sorption Kinetics

Its high-purity, powder-metallurgy-derived structure delivers an exceptional surface-area-to-volume ratio. This architecture maximizes active sites for chemisorbing residual active gases, ensuring rapid pumping speeds for hydrogen at room temperature and oxygen, nitrogen, and carbon monoxide upon thermal activation.

Inherently Clean, Non-Evaporative Operation

As a true non-evaporable getter (NEG), it eliminates the risk of particulate or thin-film contamination. This characteristic is paramount for protecting sensitive micro-optics, semiconductor surfaces, and cathode emitters from performance-degrading deposits, guaranteeing device longevity and reliability

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Monolithic Mechanical Integrity

The solid-state diffusion bonding achieved through vacuum sintering creates a robust, unitary structure. This design resists fracturing under mechanical shock and vibration, ensuring no particle generation throughout its operational lifecycle, even after full saturation and embrittlement.

Versatile Activation and Operational Flexibility

The getter offers broad operational compatibility. It can be activated in situ via laser or resistive heating and functions effectively across a wide temperature spectrum, from ambient for hydrogen pumping to elevated temperatures for oxidizing species gettering.

Exceptional Hydrogen Management

This getter provides unmatched room-temperature pumping for hydrogen, a primary outgassing product in hermetic packages. Its high-diffusivity porous matrix allows for rapid adsorption and safe storage of hydrogen, preventing pressure rise and mitigating hydrogen embrittlement risks in adjacent components.

Ultra-High Vacuum (UHV) Compatibility

The material's extremely low vapor pressure and minimal inherent outgassing after activation make it suitable for integration into systems targeting UHV and XHV regimes. It contributes directly to achieving and maintaining these pristine vacuum levels without becoming a contamination source itself.

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applications

Hermetic MEMS and Sensor Encapsulation.

This getter is critical for maintaining the essential vacuum environment within miniaturized MEMS resonators, gyroscopes, and infrared imaging bolometers. Its function prevents gaseous damping and thermal conduction, thereby preserving the high Q-factors and sensitivity required for precise inertial navigation and thermal detection systems.

Miniature Traveling-Wave Tube (TWT) Amplifiers.

Integrated within satellite communication TWTs and radar amplifiers, the getter safeguards cathode performance by continuously sorbing residual gases that cause cathode poisoning. This ensures stable electron emission and extends operational lifespan in aerospace and defense electronic warfare platforms.

High-Power Laser Diode and TO-Can Packaging.

The getter is deployed inside hermetically sealed laser diode packages to absorb moisture and corrosive gases outgassed from internal components. This protection mitigates facet oxidation and dark line defects, which is fundamental for ensuring luminous output power stability and longevity in fiber optic telecommunications and data center transceivers.

Ultra-High Vacuum (UHV) Research and Analytical Instrumentation.

The getter serves as a compact distributed pump within portable mass spectrometers, portable electron microscopes, and particle accelerator beamlines. It actively manages hydrogen and other process gases locally, contributing to achieving and sustaining the extreme vacuum integrity necessary for accurate analytical measurements and beam coherence.

High-Power Laser Diodes for Medical & Industrial Applications

How a Titanium Getter Works: Principles and Purpose

A titanium getter operates on the principle of selective chemical gettering, functioning as a passive, high-capacity pump to actively maintain vacuum integrity. Its purpose is not merely to create a vacuum but to perpetually sustain it by removing active gas species that evolve from internal components or permeate through seals over time.

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The core mechanism involves chemisorption, where gas molecules undergo an irreversible chemical reaction with the highly reactive, clean titanium surface. Upon thermal activation, which removes the native passivation layer, the fresh titanium surface exhibits a strong affinity for reactive gases. Oxygen, nitrogen, and carbon monoxide molecules dissociate upon contact and form stable, solid-state compounds such as titanium dioxide (TiO₂), titanium nitride (TiN), and titanium carbide (TiC). This reaction permanently sequesters these gases within the getter's bulk material.

Hydrogen management occurs through a combination of physisorption and absorption. Hydrogen molecules (H₂) dissociate into atoms at the titanium surface and subsequently diffuse into the metal's crystalline lattice to form a reversible titanium hydride (TiH₂) phase. This unique capability allows the getter to effectively "breathe" hydrogen, acting as a buffer to control hydrogen partial pressure within the enclosed environment throughout device operational life.

The fundamental purpose of integrating a titanium getter is to ensure long-term operational stability and reliability for vacuum-dependent micro-devices. It prevents performance-degrading phenomena such as cathode poisoning in electron emitters, oxidation of sensitive optical surfaces, and parasitic discharge caused by ionized gas molecules. By continuously pumping residual and outgassed species, the getter guarantees the pristine vacuum environment essential for the functionality and longevity of critical systems in aerospace, telecommunications, and advanced instrumentation.