Oxygen-Nitrogen-Hydrogen Analyzer for Ceramics and Refractory Materials

What is the Oxygen-Nitrogen-Hydrogen Analyzer for Ceramics and Refractory Materials?

An oxygen-nitrogen-hydrogen analyzer for ceramics and refractory materials uses a high-power electrode furnace to decompose nitrides and oxides such as silicon nitride, aluminum nitride, and boron nitride. It measures high-percent O and N where metal analyzers saturate. It suits ceramic and semiconductor materials research.

Overview

This variant is configured for ceramic powders, nitrides, carbides, and refractories that release gas slowly and at high temperature. The furnace delivers up to 8 kW to reach temperatures above 2800 °C, usually with a nickel or tin capsule and a platinum or nickel bath to dissolve the sample. Because oxygen contents reach 1–40% in oxide and nitride ceramics, detection uses dual infrared ranges with automatic range switching, and nitrogen up to 40% is measured by a thermal conductivity cell with reduced sample mass of 5–50 mg. Extended integration times of 120–240 seconds ensure complete gas release, and the software calculates oxygen and nitrogen mass fractions for phase and stoichiometry assessment. The instrument is used in ceramics R&D, semiconductor substrates, and nuclear fuel precursor work.

How does it work?

An oxygen nitrogen hydrogen analyzer places a sample of 0.1–1 g in a high-purity graphite crucible clamped between two electrodes in a sealed furnace flushed with helium or argon. A high current heats the crucible to 2000–3000 °C, melting the sample and releasing its gases. Oxygen reacts with graphite to form CO, nitrogen leaves as N2, and hydrogen as H2. CO and, after oxidation, CO2 are detected by non-dispersive infrared cells, while N2 and H2 are measured by a thermal conductivity cell after the gas stream passes rare earth copper oxide and absorbent traps. Hydrogen may be separated by a molecular sieve column. Results are calibrated against certified reference materials such as steel, titanium, and nickel alloys. Since gases are extracted from the bulk, the analysis gives total content, not surface contamination.

What are the key features?

• High-power furnace up to 8 kW reaches temperatures above 2800 °C.
• Dual infrared ranges with automatic switching cover ppm to 40% oxygen.
• Platinum or nickel bath assists dissolution of nitrides and oxide powders.
• Extended integration time of 120–240 seconds ensures full gas release.
• Reduced sample mass options for high-oxygen and high-nitrogen materials.

What are the technical specifications?

A typical oxygen-nitrogen-hydrogen analyzer for ceramics and refractory materials configuration offers oxygen range of 0.001–40%, nitrogen range of 0.001–40%, hydrogen range of 0.0001–1%, sample mass of 5–100 mg for high content; up to 1 g for trace, furnace power of Up to 8 kW and maximum temperature of Above 2800 °C. Values are indicative of the product class; the exact figures for each configuration are confirmed on the quotation and the calibration documents supplied with the instrument.

Which applications is it used for?

The Oxygen-Nitrogen-Hydrogen Analyzer for Ceramics and Refractory Materials is used in silicon nitride and aluminum nitride powder QC, refractory and technical ceramic development, semiconductor substrate material analysis and carbide and boride powder characterization. Across the wider Oxygen Nitrogen Hydrogen Analyzers class, laboratories also deploy it for steel cleanliness and gas content control, titanium and zirconium alloy qualification and hydrogen embrittlement investigation.

Which standards and certifications apply?

Relevant standards and methods include ASTM E1409, ASTM E1447, ASTM E1019, ISO 10720, GB/T 11261, GB/T 20124 and IEC 61010-1. Certification candidates for this model are CE and ISO 9001 manufacturing; each is to be confirmed for the specific configuration before shipment, and certificates are supplied only where they have been issued.

Hydrogen and oxygen results depend strongly on sample handling. Steel hydrogen specimens must be quenched in cold water and stored in liquid nitrogen or dry ice to prevent diffusion, and analyzed promptly. Oxygen and nitrogen samples are cleaned, dried, and handled with tongs. Use helium of at least 99.995% purity, regulated pneumatic gas, and cooling water at 15–25 °C. Crucible outgassing is performed before each run and furnace electrodes and dust filters need cleaning after a defined number of analyses, usually 30–100. Calibrate frequently with certified standards and check blanks daily. Installation requires fume extraction and adequate power, since the impulse furnace draws high current. Validate methods against ASTM E1409, ASTM E1447, and ISO 4295-type procedures.

How do I select the right Oxygen-Nitrogen-Hydrogen Analyzer for Ceramics and Refractory Materials?

Select this variant when samples are ceramics or refractories with oxygen or nitrogen above 1%, or that need high furnace power. Metals-only laboratories do not need it. In an RFQ, specify expected oxygen and nitrogen range, sample mass, bath material, and maximum temperature requirement. Confirm sample handling.

How does it compare with other Oxygen Nitrogen Hydrogen Analyzers variants?

Decide which gases matter and in which matrices. Oxygen and nitrogen in steel and titanium require a standard impulse furnace, while hydrogen in steel at 0.5–10 ppm often calls for a dedicated hydrogen channel or a separate hydrogen analyzer with a thermal conductivity cell. For ceramics and refractory powders that release gas slowly, higher furnace power up to 5–8 kW and longer integration are needed. Specify expected ranges, because ppm-level oxygen needs low-range infrared cells and careful blank control. Consider sample geometry: pins and rods need a cutting station, whereas powders require tin or nickel capsules. Autosamplers with 20–50 positions and automatic crucible handling increase throughput. Check the availability of certified reference materials for your alloys and ask for detection limits, typically 0.05 ppm to 1 ppm, verified on matching materials.