ISO 17942:2014

Overview

ISO 17942:2014 - "Fine ceramics (advanced ceramics, advanced technical ceramics) - Methods for chemical analysis of boron nitride powders" - defines standardized laboratory methods for the chemical analysis of boron nitride (BN) powders used as raw materials in fine ceramics. The standard covers determination of major and trace constituents, sample preparation, reporting rules, and options for instrumental and wet-chemical techniques. It is intended to ensure reproducible, comparable test results for quality control, materials development, and supply-chain verification.

Key technical topics and requirements

• Scope of analytes: total boron, free boron, total nitrogen, silicon, carbon, oxygen, and trace metals including Al, Cd, Ca, Cr, Co, Cu, Fe, Pb, Mg, Mn, Ni, Ti, V, Zn, Na, K.
• Sampling and sample preparation: sampling according to ISO 9138; weighing to 0.1 mg precision; recommended drying procedure (120 ± 5 °C for 2 h) and desiccation.
• Reporting rules: perform duplicate analyses on different days, conduct blank tests, and report averaged values when within prescribed tolerances.
• Analytical methods (options given):
  • Total boron: fusion followed by titration (fusion–titration) or fusion with ICP-OES (fusion–ICP-OES).
  • Free boron: acid digestion–ICP-OES or methanol extraction–ICP-OES; hydrolysis artifacts can be corrected by spectrophotometry.
  • Total nitrogen: acid pressure decomposition with distillation and titration, or inert gas fusion with thermal conductivity detection.
  • Silicon and many metals (Al, Cd, Ca, Cr, Co, Cu, Fe, Pb, Mg, Mn, Ni, Ti, V, Zn): acid pressure decomposition–ICP-OES or fusion–ICP-OES.
  • Sodium and potassium: AAS, flame emission spectrometry (FES), or ICP-OES after acid decomposition.
  • Carbon: combustion with IR absorption or thermal conductivity detection.
  • Oxygen: inert gas fusion with IR absorption spectrometry.
• Supporting materials: normative references (water and reagent standards), and informative annexes (e.g., certified reference materials, round-robin results, ICP-OES spectral lines).

Practical applications - who uses ISO 17942:2014

• Fine ceramics manufacturers verifying raw BN powder chemistry for sintering, thermal or electrical performance.
• Materials testing laboratories performing routine quality control or contract testing for suppliers and end-users.
• Raw material suppliers and buyers for specification compliance and acceptance testing.
• R&D teams characterizing BN powders for new formulations, coatings, or high-temperature applications.
• Regulatory and procurement specialists who require traceable, standardized analytical procedures.

Related standards and keywords

• Related: ISO 9138 (sampling), ISO 3696 (water for analytical use), and reagent specifications.
• SEO keywords: ISO 17942:2014, boron nitride powders, chemical analysis, fine ceramics, ICP-OES, total boron, free boron, total nitrogen, combustion analysis, inert gas fusion, AAS, FES, sampling, quality control.