Verdict
⚠️ Questionable (存疑). One confirmed internal contradiction of high severity; three additional issues flagged with plausible benign explanations. Final determination requires author-provided raw electrochemical log files and original high-resolution figures.
Key findings
- 🔴 Confirmed internal contradiction between abstract/conclusion and Table 1 (high severity). The abstract and Conclusion §3 state that CuPANI exhibited "少量气泡和 8%的白霜" at 12.5 d. Table 1 records CuPANI rating 3 (= 4% paled) at 12.5 d; rating 4 (= 8% paled) first appears at 17.5 d and 20 d. This is an unambiguous numerical mismatch within a single paper.
- 🟠 Icorr vs. corrosion-resistance narrative discrepancy (medium severity, plausible benign explanation). Table 2 shows CuPANI Icorr decreasing from 5.332×10⁻⁶ A·cm⁻² (1 d) to 2.173×10⁻⁶ A·cm⁻² (15 d), while §3.5 states "随着浸泡时间的增加，防腐蚀效果逐渐降低." Polyaniline is an active/passivating coating, so non-monotonic Icorr behavior is mechanistically plausible; the prose conclusion may rely on EIS arcs (Fig. 8) and the consistent negative shift of Ecorr (-0.652 V → -0.705 V). Needs raw data confirmation.
- 🟡 Statistical flags on Table 2 (low severity, likely benign). Benford's-law and last-digit tests flagged deviation (χ²=71.3, p=0.0000 for last-digit). However, Table 2 contains only 7 rows (14 values) produced by CHI660E instrument fitting, with values restricted to narrow physical ranges (Ecorr ≈ -0.6 to -0.9 V; Icorr ≈ 10⁻⁴ to 10⁻⁷). Benford and uniform-last-digit tests assume large, naturally distributed samples; conditions are not met.
- 🟡 Image forensics flags (low severity, likely benign). img-000.jpg and img-003.jpg show uneven noise variance (CV=1.93 and 1.22) and copy-move matches at offsets such as (56,0), (-24,8), (8,40). These offsets are consistent with regular figure elements (axis ticks, panel borders). Visual review detected no obvious splicing or reuse. Journal scanning and re-compression artifacts remain the most plausible cause.
- Abstract/Conclusion text: "中性盐雾实验12.5d，CuPANI涂层只出现少量气泡和 8%的白霜"
- Table 1 footnote: "3: 4% paled; 4: 8% paled"
- Table 1 CuPANI row: rating 3 at 12.5 d; rating 4 at 17.5 d and 20 d
- Table 2 CuPANI Icorr: 1 d = 5.332×10⁻⁶, 3 d = 2.339×10⁻⁶, 7 d = 2.347×10⁻⁶, 15 d = 2.173×10⁻⁶ A·cm⁻²
- Table 2 CuPANI Ecorr: 1 d = -0.652 V → 15 d = -0.705 V
- DOI: 10.11902/1005.4537.2015.149
- Year: 2016; source PDF: 202303.10444v1.pdf
Evidence highlights
Notes
The Bayesian synthesis block in the source report (BF = 3.85×10¹⁶, ≥99.9% posterior) is based on automated aggregation of low-individuality forensic flags (copy-move matches, PRNU similarity) under a 5% prior with assumed conditional independence. Per the disclaimer in the original report, this automated posterior is not a finding of misconduct and likely overstates evidence weight because the contributing flags are themselves prone to false positives on scanned journal pages. The actionable item is the confirmed abstract–Table 1 contradiction, which is independent of any forensic statistic and requires only an author erratum or correction. Recommended next steps: (1) request CHI660E raw log files and test timestamps for Table 2; (2) request the authors clarify the 12.5 d "8% 白霜" statement relative to Table 1's rating 3 entry; (3) consider PubPeer comment or editorial report contingent on the authors' response.